Study Group (TV series)

Study Group is an American adult animated urban fantasy action comedy-drama web television series created by Drew Gars.

Premise
In the mid-1990s in the fictional city of Calebridge, California, a group of high school students get into a string of adventures when an undercover wizard enters their lives and begin to monitoring magical activity in the city and stopping dark forces that would put the human world in jeopardy and risk exposure of the Magical Realm.

Season 1: Class in Session
(1996)

Ronin, a wizard of the Enchanted Guild police force, is sent to Calebridge, a city in San Diego County, California, to investigate...

Season 2: Wrath of the Sorceress
(1997)

TBA.

Season 3: Siege Over Calebridge
(1997 - 1998)

TBA.

Season 4: The Witch's Demon
(1998 - 1999)

TBA.

Movie
The Study Group Movie: World Tour Summer

Season 5: New Class, New Beginnings
(1999 - 2000)

TBA.

Movie 2
Study Group 2000

Season 6: The War of Two Worlds
(2003)

TBA.

Miniseries
Study Group: Class Reunion

Main Characters

 * Aaron Erland (voiced by Elijah Wood) - an ordinary introverted student at Jimmy Carter High School and the reluctant leader of the group. He is diagnosed with autism spectrum disorder.
 * Sarah Taggert (voiced by Mae Whitman) - a smart, responsible and committed tomboy student at Jimmy Carter High School and the den mother of the group, often acting as Aaron’s second-in-command.
 * Jake Bendson (voiced by Jason Mantzoukas) - a rebellious and trouble-making student at Jimmy Carter High School and a member of the group.
 * Holly Rosenblatt (voiced by Ellie Kemper) - a peppy, air-headed and pop culture-obsessed redhead Jewish student at Jimmy Carter High School and a member of the group.
 * Flint Barlow (voiced by Thomas Middleditch) - an outspoken and ostentatious liberal student at Jimmy Carter High School and the political member of the group. He is Elle's only friend throughout their childhood.
 * Eloise "Elle" Hannaway (voiced by Lizzy Caplan) - a cynical, sarcastic and secluded goth student at Jimmy Carter High School and the Wiccan member of the group.
 * Ronin (voiced by Simon Pegg) - an eccentric wizard and a low-level member of the Enchanted Guild who becomes the groups’ reluctant mentor who is undercover as a librarian at Jimmy Carter High School under the alias named Ronan Perkins.
 * Elizabeth "Lizi" Erland (voiced by Eden Sher) - Aaron’s little sister and Ted and Julia’s daughter. (Season 4-5, recurring seasons 1-3, guest season 6)

Calebridge High School

 * Lucy Armstong (voiced by Natalie Portman) - an altruistic honor student at Calebridge High School and Flint's love interest. She shares the same liberal beliefs as Flint, but she has remained closeted about them out of the fear she would turn people off from her until she met Flint and they become the school's secondary power couple.
 * Jessica Byrnfeld (voiced by Ashley Tisdale) - the rich, pretty, self-centered and spoiled valley girl head cheerleader of the cheerleading squad and a popular student in Calebridge High School who causes drama amongst her classmates.
 * Kurt Blunsky (voiced by Seth Green) - the mean, aggressive and boorish school bully and a student at Calebridge High School who constantly picks on Aaron, Jake and (mostly) Flint.
 * Tyler Kelly (voiced by Khary Payton) - the affable and compassionate center of the school's football team, The Steel Dragons, and a popular student at Calebridge High School. He gets along with everyone in the school, except for Jessica, Kristy and Flint.
 * Courtney Meachum (voiced by Jenny Slate) - Jessica's best friend, a member of the cheerleading squad and a popular student at Calebridge High School. (season 1 - season 3)
 * Carly Sampson (voiced by Laura Bailey) - one of Jessica's hot and attractive friends, a member of the cheerleading squad and a popular student at Calebridge High School. She is the only one in Jessica's friend group who doesn't like her treatment of the less popular students.
 * Hunter McClane (voiced by Beck Bennett) - Jessica's boyfriend, the handsome and showboating star quarterback of the Steel Dragons football team and a popular student at Calebridge High School.
 * Mindy Ellis (voiced by Keke Palmer) - the perfectionistic and organized class president of the 10th grade and a student at Calebridge High School. In the season 2 episode "School Election", she begins to run for student body president.
 * Kristy Skinner (voiced by Sarah Silverman) - a conservative-raised student at Calebridge High School and Flint’s nemesis from their elementary school days. She regularly snitches on the group for ditching classes and constantly tries to figure out the group’s activity.
 * Cadecus "Cad" Hodgekiss (voiced by Macaulay Culkin) - a pompous and preppy wealthy rich kid and a student at Calebridge High School. In season 1, he served as Holly's love interest until season 2, where it is revealed that they broke up during Christmas break due to Holly catching him cheating on her with Jessica.
 * Isabella Estévez (voiced by Gina Rodriguez) - a tough and feisty Hispanic riot grrrl student at Calebridge High School. In the season 2 episode "Unlisted", it is revealed that she is a closeted lesbian until in the season 3 episode "Orgullo Hispano (Hispanic Pride): A Hispanic Heritage Special", she is outed by Jessica.
 * Jordan Qiang (voiced by Ali Wong) - an Chinese-American student at Calebridge High School and a member of the cheerleading squad.
 * Takamaru “T.J.” Juichi (voiced by Masi Oka) - a Japanese-American student at Calebridge High School who imports various forms of Japanese media and sells them so he can pay for college.
 * Francis "Frankie" Hoffman (voiced by Jamie Kennedy) - the school class clown/prankster and a student at Calebridge High School.
 * Obadiah "Obby" McKinney (voiced by Noel Fisher) - a dimwitted overweight student at Calebridge High School.
 * Chaquille "DJ Alchemy" Mcdowell (voiced by Jay Pharoah) - an struggling rapper and a student at Calebridge High School.
 * Principal Charles "Chuck" Plaskett (voiced by Wayne Knight) - the principal of Calebridge High School.
 * Officer Gerry Ford (voiced by Rainn Wilson) - the stern security guard at Calebridge High School.
 * Mr. Earl Slater (voiced by Kurtwood Smith) - the grumpy and flustered homeroom teacher and history teacher at Calebridge High School.
 * Mr. Fabian Garfield (voiced by Phil LaMarr) - the math teacher at Calebridge High School.
 * Ms. Bette Losinski (voiced by Amy Poehler) - the current science teacher at Calebridge High School.
 * Coach Roland Kletz (voiced by Rob Riggle) - the alpha male P.E. teacher at Calebridge High School and the head coach of the Steel Dragons.
 * Mr. Rory Shepherd (voiced by Jack McBrayer) - the kind-hearted school counselor at Calebridge High School.
 * Sr. Emanuel Sánchez (voiced by Carlos Alazraqui) - the spanish teacher at Calebridge High School.
 * Ms. Evelyn Cobb (voiced by Tress MacNeille) - the art teacher of Calebridge High School.
 * Mr. Morris Bishop (voiced by Jesse Tyler Ferguson) - the drama teacher at Calebridge High School.
 * Ms. Janette Knapp (voiced by Jill Talley) - the music teacher at Calebridge High School.
 * Florence Talley (voiced by Conchata Ferrell) - a disgruntled lunch lady at Calebridge High School.
 * Nurse Loraine Moore (voiced by Edie McClurg) - the cheery school nurse at Calebridge High School.
 * Mr. "Fitz" Fitzsimmons (voiced by H. Jon Benjamin) - the stoner janitor at Calebridge High School who thinks the magic activity are hallucinations when he’s high.

Family Members

 * Theodore “Ted” Erland (voiced by John Hodgeman) - Aaron and Lizzy’s father and Julia’s husband who works as an insurance sales agent.
 * Julia Erland (voiced by Carla Gugino) - Aaron and Lizzy’s mother and Ted’s wife who works as an accountant for a credit union called Summit Trust Credit Union.
 * Dralo (voiced by Tom Kane while Dee Bradley Baker provides vocal effects) - a magical talking dragon who transforms into any house pet, mainly a cat or dog. He is based on the character Draco from the 1996 film Dragonheart.
 * Elise Erland (voiced by Betty White) - Aaron and Lizzy’s grandmother and Ted’s mother who is a retired magician’s assistant. ("Happy Birthday Aaron" and "TBA")
 * Howard Taggert (voiced by John Michael Higgins) - Sarah’s father and Nina’s husband who works as a construction foreman.
 * Nina Taggert (voiced by Laurie Metcalf) - Sarah’s mother and Howard’s wife who works as a news producer at Channel 9 News on WCC-TV.
 * Brennan Taggert (voiced by Jake Johnson) - Sarah’s older brother and Howard and Nina’s son who serves as a master sergeant in the U.S. Army.
 * Dean Bendson (voiced by Denis Leary) - Jake and Kelly’s father and Keira’s husband who works as a detective sergeant of the Calebridge Police Department.
 * Keira Bendson (voiced by Katey Sagal) - Jake and Kelly’s mother and Dean’s wife who work as a waitress at Denny’s.
 * Kelly Bendson (voiced by Bridgit Mendler) - Jake’s older sister and Keira and Dean’s daughter who attends Calebridge Community College.
 * Peter Rosenblatt (voiced by Nick Offerman) - Holly’s father and Candace's husband who works as a manager at Costco.
 * Candace Rosenblatt (voiced by Megan Mullally) - Holly’s mother and Peter's wife who is a stay-at-home wife.
 * Audrey Barlow (voiced by Debra Messing) - Flint's mother and Henry's wife who is works as an professor of Sociology at Calebridge Community College.
 * Henry Barlow (voiced by Stephen Colbert) - Flint's father and Audrey's husband who is a human rights activist turned lawyer at Schultz & Moss law firm.
 * Poppy Hannaway (voiced by Paget Brewster) - Elle's widowed mother who works as a ED nurse at Calebridge General Hospital.
 * Erik Hannaway (voiced by Tim Burton (season 2), Jeff Goldblum (season 4)) - Elle’s deceased father and Poppy’s former husband who was a struggling artist.
 * Stephanie Armstrong (voiced by Ashley Judd) - Lucy's mother and Elliot's wife.
 * Elliot Armstrong (voiced by Ed Helms) - Lucy's father and Stephanie's husband.
 * Joshua Byrnfeld (voiced by Paul Rudd) - Jessica's father and Cheryl's husband who is the CEO of Crowncord Industries.
 * Cheryl Byrnfeld (voiced by Alicia Silverstone) - Jessica's mother and Joshua's wife who is the president of the Calebridge Homeowners Association.
 * Dr. Carter Kelly (voiced by Kevin Michael Richardson) - Tyler's father and Shannon's husband who works as a doctor at Calebridge General Hospital.
 * Shannon Kelly (voiced by Cree Summer) - Tyler's mother and Carter's wife who works as a TBA.
 * Richford Hodgekiss (voiced by John O’Hurley) - Cad's wealthy father and Drusilla's husband who works as an attorney.
 * Drusilla Hodgekiss (voiced by Dana Delany) - Cad's mother and Richford's wife who works as an interior designer.
 * Yolanda Estévez (voiced by Salma Hayek) - Izzy's mother and Armando’s wife who is a proprietor of a dry cleaners.
 * Armando Estévez (voiced by Eugenio Derbez) - Izzy’s father and Yolanda’s husband who is an doctor at the Bellevue Medical Clinic.
 * Angelina Estévez (voiced by Selena Gomez) - Yolanda and Armando’s oldest daughter and Izzy’s big sister.
 * Romina Morterero (voiced by Renée Victor) - Izzy’s grandmother and Yolanda’s and Camila’s mother who is the matriarch of the Morterero family.
 * Christian Morterero (voiced by Danny Trejo) - Izzy’s slacker grandfather and Yolanda’s father who is a mechanic.
 * Camila Morterero (voiced by Jennifer Lopez) - one of Romina’s daughters and Angelina and Izzy’s aunt who is a lounge singer at a Mexican speakeasy.
 * Valerie Meachum (voiced by Molly Shannon) - Courtney’s mother. ("Sex Ed")
 * Karl Meachum (voiced by Michael Rooker) - ("Sex Ed")
 * Malcolm Blunsky (voiced by Bill Burr) - Kurt's workaholic father and Chelsea's husband. ("Exposed")
 * Chelsea Blunsky (voiced by Judy Greer) - Kurt's workaholic mother and Chelsea's wife. ("Exposed")

Calebridge
Calebridge is a fictional small city that is the series’ primary setting that serves as the home of the group. The city is a fictional district in the East County of San Diego County, California. The city is shown to have 18 schools, 1 police department, 1 fire department, 12 churches and 5 parks. Gars stated that the city is an amalgamation of Imperial County cities Calexico and El Centro.


 * Superintendent Bernard McAllister (voiced by Philip Baker Hall) - the superintendent of the Calebridge Unified School District and Plaskett's superior.
 * Madame Pilika Simmons (voiced by Whoopi Goldberg) - a spiritual shaman woman and the owner of The Iron Cauldron magic shop.
 * Curtis Simmons (voiced by John Witherspoon) - a street-wise shaman, Pilika's husband and the co-owner of The Iron Cauldron magic shop.
 * Leanne Fleming (voiced by Laraine Newman) - the Erlands’ nosy neighbor who witnesses the group’s magical activity but is not believed.
 * Tricia Maxwell (voiced by TBA) - one of Lizzy's best friends who attends Sierra Junior High School.
 * Ned Holden (voiced by Finn Wolfhard) - one of Lizzy's best friends who attends Sierra Junior High School.
 * Sheriff Marvin Dixon (voiced by Reginald VelJohnson) - the sheriff of the Calebridge County Sheriff's Department.
 * Brianna Heitzman (voiced by Rachael MacFarlane) - a hard-nosed journalist for The Calebridge Chronicle daily newspaper who’s investigating the magic activity that’s occurring in Calebridge.
 * Michaela Bradburne (voiced by Debi Mazar) - the sharp-tongued and talebearing editor-in-chief of The Calebridge Chronicle and Heitzman's and Northley's boss.
 * Cal Northley (voiced by Patton Oswalt) - a sly journalist for The Calebridge Chronicle who is Heitzman's rival.
 * Gavin Berkhimer (voiced by Tom Kenny) - the news anchor of Channel 9 News on WCC-TV.
 * Zoey Weingart (voiced by Grey DeLisle) - the news co-anchor of Channel 9 News on WCC-TV.
 * Amelia Johnson (voiced by Kari Wahlgren) - a news correspondent of Channel 9 News on WCC-TV.
 * Harry Ellsworth (voiced by Ed Asner) - the general manager of the television station WCC-TV and Nina’s boss.
 * Vic Musgrave (voiced by Eugene Levy) - Ted’s boss at an insurance agency.
 * Max Gillespie (voiced by Jason Alexander) - the manager of a local ampm and Aaron’s boss at his after school job. (Season 3 - Season 4)
 * Ari Faulkner (voiced by Jon Lovitz) - the proprietor of the Video 3,000 video rental store and Holly's boss.
 * Cameron Schultz (voiced by Dan Aykroyd) and Jayden Moss (voiced by Bill Murray) - the senior partners of Schultz & Moss and Henry’s bosses.
 * Pastor William "Father Billy" Spreckley (voiced by Mark Hamill) - the minister of the Blainville Mosaic Church that Poppy and Elle go to. (Season 1 - Season 4)
 * Captain Braxton "Captain Lieutenant" Hogan (voiced by Jim Cummings) - a sea captain who is a former U.S. Navy lieutenant-turned-fishermen at Calebridge Harbor.
 * Jed Cappellini (voiced by John DiMaggio) - the landlord of Ronin’s apartment building.
 * Rabbi Giannes Bayme (voiced by Richard Schiff) - the rabbi of the Temple of Neve Yeshurun synagogue that Holly and her parents go to.
 * Bishop Darren Bonneville (voiced by Fred Tatasciore) - the bishop of the Catholic Diocese of Calebridge.
 * Chief Alec Winder (voiced by Maurice LaMarche) - the police chief of the Calebridge Police Department. He is modeled after the late actor Paul Gleason.
 * Chief Brendan Davis (voiced by John DiMaggio) - the fire chief of the Calebridge Fire Department.
 * Mayor Darryl Russell (voiced by Daran Norris) - the competent but oafish mayor of Calebridge. He is based on the late actor Leslie Neilson.

Bureau of Supernatural Investigations (B.S.I.)
The Bureau of Supernatural Investigations is a top secret U.S. government organization dedicated to locating, containing, studying and if necessary, destroying supernatural threats and unknown phenomenons.
 * Susanne Clarkson / The Chief (voiced by CCH Pounder) - the cold and mysterious director of Bureau of Supernatural Investigations. She is one of the few people who knows about The Enchanted Guild and the group’s activity. While she may serve as a potential threat to the group, on occasions, she allies with them if by any means necessary and helps them get off General Gould’s radar.
 * Special Agent Tanner (voiced by Rob Paulson) - a B.S.I special agent-in-charge who serves as the right-hand to Clarkson.
 * Agent Campbell (voiced by Phil Morris) - a B.S.I. field agent who is tasked to monitor the group's activity.
 * Agent Hendricks (voiced by Jess Harnell) - a B.S.I. field agent who is tasked to monitor the group's activity.

Other Characters

 * Walden Banning (voiced by TBA) - a cryptozoologist and mythology investigator. ("TBA", "TBA" & "TBA")
 * Joan "Arc" Marston / Air-Heart (voiced by Megan Boone) - a U.S. Air Force Senior Airman and Brennan's old penpal who got exposed by various chemicals and from that experience, she is given extraordinary powers, such as flight, super strength, truth inducement and electric manipulation. Soon after, she became a counter-terrorist for the U.S. Armed Forces under the codename "Air-Heart". ("Air-Heart", "TBA" & "TBA")
 * Colonel Ian Berenger (voiced by Kelsey Grammer) - a U.S. Army Special Forces colonel and Brennan’s commanding officer. He is modeled after the late actor Dennis Hopper. (Season 3)
 * Eldridge Graham (voiced by Samuel L. Jackson) - a retired political activist who becomes a father figure to Elle. (Season 4)
 * Henry Connors / The Green Man (voiced by Fred Tatasciore in monster form and Josh Robert Thompson when he was human) - a once wealthy land developer who long ago was cursed by an enchantress and transformed him into an anthropomorphic elemental forest creature. As punishment for his damage to the environment, he is forced into be the reluctant guardian of the Calebridge's forest, Barringmore Grove. Since then, he has become a urban legend among the forest community, known to them as The Green Man. He is a parody of Swamp Thing from DC Comics. ("The Green Man", "TBA" & "TBA")
 * Godzilla - an ancient enormous prehistoric sea monster awakened and empowered by nuclear radiation. ("TBA", "TBA" and "TBA")
 * Abraham Van Helsing (voiced by Will Smith) - a legendary monster hunter, an occult private investigator and an occasional ally to the Vatican who is cursed with immortality and regenerative healing factor. This is the first version of the character where he is portrayed as an African-American. This version of the character is an amalgamation of various characters that Smith's played in his career as well as containing minor elements of the 2004 film. (Season 4)
 * Barry Hamill (voiced by Jerrod Carmichael) - a college student at Aaron's college.
 * Jojo "D.J." Sterling (voiced by TBA) - a college student at Aaron's college.
 * Katelynn Tracey (voiced by Brie Larson) - a college student at Holly's art school.
 * Jennifer "Jenny" Oakhill (voiced by Hilary Duff) - a college student at Aaron's college.
 * Jay and Silent Bob (voiced by Jason Mewes and Kevin Smith) - a pair of drug-dealing pothead slackers who make frequent appearances every now and then. Mewes and Smith both reprise their roles from Kevin Smith's View Askewniverse. ("TBA", "TBA", "TBA", "TBA" and "TBA")

The Enchanted Guild
The Enchanted Guild is a military/police force created by Merlin and Ambrosius after the events of the Great Magic War. They patrol the farthest reaches of the Magic Realm at the behest of the Enchanted High Council, residing in a citadel known as the Sanctum of Enchantment.
 * The Enchanted High Council
 * Chairman Eporehagan (voiced by Bob Gunton) - the strict chairperson of the Enchanted High Council and the leader of the Enchanted Guild. Though he is skeptical of the group, he soon warms up to them, considering them allies.
 * Councilman Absalom (voiced by Ray Wise) - a councilor of the Enchanted High Council and a leading official of The Enchanted Guild. He has a close relationship with Ronin due to him being once his training instructor in Ronin’s training days.
 * Councilman Newrick (voiced by Ernie Hudson) - a councilor of the Enchanted High Council and a leading official of The Enchanted Guild.
 * Councilwoman Stadeis (voiced by Mindy Sterling) - a councilor of the Enchanted High Council and a leading official of The Enchanted Guild.
 * Councilman Gekotaz (voiced by Richard McGonagle) - a councilor of the Enchanted High Council and a leading official of The Enchanted Guild.
 * Councilman Phogorim (voiced by Keone Young) - a councilor of the Enchanted High Council and a leading official of The Enchanted Guild.
 * Councilman Bligast (voiced by Bruce McGill) - a councilor of the Enchanted High Council and a leading official of the Enchanted Guild.
 * Captain Slexius (voiced by Michael Ironside) - a stern and no-nonsense wizard who is the mission commander of the Enchanted Guild wizards and the captain of the Sanctum‘s guard.
 * Adalynne (voiced by Anne Hathaway) - a feisty, kind, stubborn and intelligent highly trained female wizardess and a member of the Enchanted Guild who had a romantic past with Ronin. (season 2 - present)
 * Thozahr (voiced by Jon Hamm) - a hotshot debonair wizard and a veteran member of the Enchanted Guild who is regarded as "the Magic Realm's greatest wizard". He is based on Pierce Brosnan's portrayal of James Bond. (season 2 - present)
 * Flax Rainbowcrystal (voiced by Sam Seder) - a fairy who is the messenger to the Enchanted High Council and the group's liaison to The Enchanted Guild.
 * Glywerion (voiced by Tom Kane) - a centaur who is an archivist and the librarian in the Sanctum of Enchantment for the Enchanted Guild.
 * Professor Ralpogh (voiced by David Hyde Pierce) - a brownie who is an alchemist and historian.
 * Krovatrix (voiced by David Koechner) - a wizard and a member of the Enchanted Guild who is at odds with Ronin.
 * Blabulore (voiced by Marlon Wayans) - a wizard and a member of the Enchanted Guild who is Krovatrix’s partner.
 * Holkurg (voiced by Kevin Michael Richardson) - a bodybuilding orc wizard and a member of the Enchanted Guild who patrols the orc districts.
 * Taenya (voiced by Olivia Munn) - an elven wizardess and a member of the Enchanted Guild who patrols the elven districts.
 * Marsious (voiced by Tom Kenny) - a fish humanoid wizard whose species are called aquartian and a member of the Enchanted Guild who patrols the underwater districts.
 * Rholyna (voiced by Grey DeLisle) - a sassy and gossipy wizardess who serves as a physician and medic for the Enchanted Guild.
 * Ottor (voiced by Fred Tatasciore) - a giant who is the gatekeeper of the Sanctum of Enchantment for the Enchanted Guild.
 * Eknorius (voiced by Mahershala Ali) - a deceased experienced wizard, Ronin’s partner and a member of the Enchanted Guild who was killed by human police officers.
 * Ambrosius (voiced by Christopher Plummer all subsequent appearances and Rupert Grint in "The Great Magic War") - a wise and noble retired elder wizard who was one of Merlin's apprentices and a former leader of the Enchanted Guild who is now an elder statesman. (season 1 - season 2)
 * Merlin (voiced by Liam Neeson) - the legendary wizard from Arthurian Legend who is the founder and creator of the Enchanted Guild and Ambrosius and Morganna Le Fey's mentor. Following the imprisonment of Morgana, he disappeared and hasn't been seen since.

Tradebreak
Tradebreak is a port town that is the home of various creatures and magic users in the Magic Realm. It is located in the northwestern area of the Magic Realm. The town features a marketplace and a harbor for fishing and sailing. It also severed as Ronin’s home, as well as his beat for a while.


 * Krald (voiced by Steve Buscemi) - a sleazy goblin who is a magic dealer, gangster and Ronin’s underground informant in the Magic Realm’s criminal underworld.
 * Maalik (voiced by Jack Black) - a laidback troll who is the bartender and owner of The Rusty Unicorn Tavern and Inn in Tradebreak.
 * Mick (voiced by Johnny Depp in season 1 and Jared Butler in later appearances) - a charismatic but mischievous shapeshifter who is a con artist and pickpocket.
 * Brykkor (voiced by John DiMaggio) - a gnoll who is a blacksmith and the proprietor of Blazes of Iron who speaks with a cockney accent.
 * Noldait (voiced by Ron Bottitta) - a faun who is a salesman and the proprietor of a fruit stand who speaks with a Scottish accent.
 * Madame Minerva Vexx (voiced by Kari Wahlgren) - a witch who is a fortune teller and the proprietor of a tent in the marketplace.
 * Tedurok / Teddy (voiced by Phil LaMarr) - an orge who is an underground crime boss who runs an salvaging operation with a crew made up of kobolds.
 * Gnakohr (voiced by Jess Harnell) - a minotaur who is the cook of The New Bites Diner in Tradebreak who speaks with a Russian accent.
 * Wooly McGuinness (voiced by Carlos Alazraqui) - a leprechaun who is an accountant of a leprechaun run bank called Over the Rainbow Trust.
 * Godgruc (voiced by Mark Ryan) - an elderly dwarf who is the harbourmaster of the Hermite Creek Wharf.
 * Slythers (voiced by Dee Bradley Baker) - a large talking Indian python-like creature who is the customs inspector in Tradebreack.
 * Sheriff Chazixer (voiced by Kevin Michael Richardson) - a Siberian tiger humanoid who is the sheriff of Tradebreak.
 * Mayor Honsbirt (voiced by Héctor Elizondo) - a gnome who is the Mayor of Tradebreak.

The Gruggokbone Orc clan

 * Chief Merigoth (voiced by Ron Perlman) - the fierce and respected orc chieftain of the Gruggokbone Orc clan.
 * Bat (voiced by Keanu Reeves) - an orc who is the runt member of the Gruggokbone Orc clan.
 * Glasha (voiced by Kate McKinnon) - a female orc and a member of the Gruggokbone Orc clan.
 * Otugbu (voiced by Gabriel Iglesias) - an orc and a member of the Gruggokbone Orc clan.
 * Lurbuk (voiced by Cedric Yarbrough) - an orc and a member of the Gruggokbone Orc clan.
 * Toghat (voiced by Fred Tatasciore) - an orc and a member of the Gruggokbone Orc clan.
 * Zuhgan (voiced by John DiMaggio) - an orc and a member of the Gruggokbone Orc clan.

The Thelhshys Kingdom

 * King Rhothomir (voiced by Anthony Head) - the ancestral ruler of the Thelhshys Kingdom from thousands of years ago. ("Tales from the Magic Realm: The Great Magic War")
 * King Orndacil (voiced by Peter Serafinowicz) - the elven ruler of the Thelhshys Kingdom and Eirika’s father.
 * Queen Myriani (voiced by Catherine Tate) - the elven queen of the Thelhshys Kingdom and Eirika’s mother.
 * Princess Eirika (voiced by Emma Watson) - the pacifistic elven princess of the Thelhsys Kingdom and King Orndacil and Queen Myriani’s daughter.
 * Hagluin (voiced by Jeff Bennett) - the royal advisor to King Orndacil.
 * Captain Belanor (voiced by Stephen Stanton) - the elven captain of the Thelhshys guards.

The Nightsky Coven Academy for Witches

 * Headmistress Ametrine Labyrinth (voiced by Jane Lynch) - a tough-as-nails witch who is the headmistress of the Nightsky Coven Academy for Witches.
 * Professor Eartha Grimsbane (voiced by Alex Borstein) - a witch who is a potions instructor at The Nightsky Coven Academy for Witches.
 * Professor Serafine Maganti (voiced by Mindy Sterling) - a witch who is an broom-flying instructor at The Nightsky Coven Academy for Witches.
 * Professor Corydon Le Rouge (voiced by Jennifer Saunders) - a treacherous and deceptive witch who is a spells instructor at The Nightsky Coven Academy for Witches. (season 2 - season 4)
 * The Moon Sisters
 * Bridget Delacroix (voiced by Kat Dennings) - a meek and good-natured young witch who is a student at The Nightsky Coven Academy and the leader of The Moon Sisters.
 * Clover Cromwell (voiced by Beanie Feldstein) - an overweight young witch who is a student at The Nightsky Coven Academy and a member of The Moon Sisters.
 * Aria Highmore (vocal effects by Tara Strong) - a mute young witch who is a student at The Nightsky Coven Academy and a member of The Moon Sisters.
 * Louise Wolfmoon (voiced by Sasheer Zamata) - a young witch who is a student at The Nightsky Coven Academy and a member of The Moon Sisters. She acts as Adonia’s translator.
 * The Circle of Nightshade
 * Magnolia "Maggie" Shadowwalker (voiced by Jenna Coleman) - an arrogant and chauvinistic young witch who is Bridget’s nemesis, a student at The Nightsky Coven Academy and the leader of the Circle Of Nightshade. She has a pure dislike of Elle due to her being from the Human World and not being a natural born witch.
 * Harmony Depraysie (voiced by Cree Summer) - a young witch who is one of Maggie’s friends, a student at The Nightsky Coven Academy and a member of the Circle Of Nightshade.
 * Cinnabar Ebonywood (voiced by Kari Wahlgren) - a young witch who is one of Maggie’s friends, a student at The Nightsky Coven Academy and a member of the Circle Of Nightshade.
 * Aileen Breedlove (voiced by TBA) - a young witch who is a student at The Nightsky Coven Academy and a member of the Circle Of Nightshade.
 * Bronwyn Killoran (voiced by TBA) - a young witch who is a student at The Nightsky Coven Academy and a member of the Circle Of Nightshade.

The Bagh Garohm Kingdom

 * King Norarham (voiced by Brian Blessed) - the ancestral dwarven ruler of the Bagh Garohm Kingdom from thousands of years ago. ("Tales from the Magic Realm: The Great Magic War")
 * King Bromdorli (voiced by John Goodman) - the dwarven ruler of the Bagh Garohm Kingdom.
 * Queen Strornehilda (voiced by Miriam Margolyes) - the dwarven queen of the Bagh Garohm Kingdom.
 * Captain Gruzaec (voiced by Robin Atkin Downes) - the dwarven captain of the Bagh Garohm guards.

Other Characters

 * Commander Rutrius (voiced by Patrick Warburton) - a disciplinary minotaur who is the warden of the Howling Caverns Security Prison. ("TBA", "TBA" & "TBA")
 * Qhelarrk (voiced by George Segal) - an eastern barn owl-like aarakocra who is a seer and the keeper of magical scrolls that foresee future events. ("TBA", "TBA" & "TBA")
 * Lady Lavander Sephiran (voiced by TBA) - a witch who is the high priestess of the Witches of the Crescent Moon. ("Welcome to the Magic Realm (Part 1)", "TBA" & "TBA")
 * The Eye - a monk-like order of mystical octopus-headed beings known as the Overseers who have watched over the Universe.
 * Master Dragrill (voiced by Corey Burton) - a overseer who is a mystic and the abbot of The Eye.
 * Brother Thaon (voiced by Kevin Michael Richardson) - an overseer who is a mystic and a member of The Eye.
 * Brother Kosbax (voiced by Fred Tatasciore) - an overseer who is a mystic and a member of The Eye.
 * Brother Erdsol (voiced by Jim Cummings) - an overseer who is a mystic and a member of The Eye.
 * Brother Gress (voiced by Jeff Bennett) - an overseer who is a mystic and a member of The Eye.
 * The Poseirus Kingdom - an undersea aquartian monarchy in the underwater areas of the Magic Realm.
 * King Leomaris (voiced by Jim Cummings) - the ancestral aquartian ruler of the Poseirus Kingdom from thousands of years ago. ("Tales from the Magic Realm: The Great Magic War")
 * King Maggiore (voiced by Harry Lennix) - the aquartian ruler of the Poseirus Kingdom, Lausanne’s husband and Ervin’s father.
 * Queen Lausanne (voiced by Vivica A. Fox) - the aquartian queen of the Poseirus Kingdom, Maggiore’s wife and Ervin’s mother.
 * Prince Ervin (voiced by John Boyega) - the aquartian prince of the Poseirus Kingdom and Maggiore and Lausanne’s son.
 * Captain Nerrocen (voiced by Keith Ferguson) - a aquartian who is the captain of the Poseirus Kingdom’s guard.

The Reborn Marauders
The Reborn Marauders is a organization of dark magic users, supernatural beings and fantasy creatures created by Mag’zas who seeks to conquer and rule the Magic Realm. The Marauders' headquarters is at a dark fortress called Hollowgrave Keep located on Malacan Mountain. They serve as the main antagonistic faction of the series.
 * Mag'zas (voiced by Gary Oldman) - an ancient megalomaniacal lich who was the Dark Lord of the Magic Realm, the founder of The Reborn Marauders and the ruler of Malacan Mountain thousands of years ago. He is considered to be one of the most powerful and dangerous magic users in all of the Magic Realm.
 * Krelazar The Experi-Mentor (voiced by James Spader) - a calculating and intelligent necromancer who is the current leader of The Reborn Marauders, the regent of Malacan Mountain and the group’s archenemy who seeks to resurrect his master Mag'zas. He serves as the main antagonist of the series.
 * Cravraz (vocal effects by Frank Welker) - a ferocious wyvern who serves as Krelazar’s pet who transforms into a giant horned lizard.
 * Lady Vanessa (voiced by Grey DeLisle) - a cunning and seductive vampiress who is the second-in-command of The Reborn Marauders and the right-hand to Krelazar. She has the ability to transform into a large bat-like creature and is one of the few vampires that can survive daylight.
 * General Stogmar (voiced by Matthew Wood) - a ruthless lich warrior who was the military commander of The Reborn Marauders Army back in the Great Magic War who survived the final battle and now serving under Krelazar. (season 2 - present)
 * General Balgriks (voiced by Clancy Brown) - a malicious winged dragonkin who is a warlord and the leader of the Sky Demons dragonkin army that allies with The Reborn Marauders. (season 1)
 * Zarthox (voiced by David Sobolov) - a dragonkin who is Balgriks' trusted lieutenant and second-in-command of the Sky Demons.
 * Wethrafo, Theffae and Lethi (voiced by Tress MacNeille, Cree Summer and Tara Strong) - a pair of graeae who act as oracles for The Reborn Marauders.
 * Solazs (voiced by Keith Szarabajka) - a naga warrior who is a member of The Reborn Marauders. ("Pilot")
 * Xazgur (voiced by Aurelio Voltaire) - a mare who is an assassin for the Reborn Marauders. ("TBA")
 * High General Vromkor (voiced by John Noble) - a lich warrior who was the leader of The Reborn Marauders’ generals and Mag’zas’ most trusted advisor during the Great Magic War. ("Tales from the Magic Realm: The Great Magic War")
 * General Maugrox (voiced by Jeffrey Combs) - a lich warrior who was Mag’zas’ herald and the leader of the Hollow Eradicators battalion during the Great Magic War. ("Tales from the Magic Realm: The Great Magic War")
 * General Brulgyqan (voiced by Tony Todd) - a lich warrior who was the leader of the Screaming Banshee wyvern brigade during the Great Magic War. ("Tales from the Magic Realm: The Great Magic War")
 * General Crathu (voiced by Nika Futterman) - a lich warrior who was the leader of the Poisoned Plunderers armada during the Great Magic War. ("Tales from the Magic Realm: The Great Magic War")
 * Duskmen - the Reborn Marauders' skeleton foot soldiers.
 * Borgek and Truczu (voiced by John DiMaggio and Rob Paulson) - a pair of dimwitted Duskmen who serves as spies who monitor the group's every move.
 * Dithur (voiced by Dee Bradley Baker) - a Duskman who serves as the adjutant to General Stogmar.
 * Szuchor (voiced by Jeff Bennett) - a Duskmen who is the dungeon master of Hollowgrave Keep‘s dungeon.
 * Grusti (voiced by TBA) - a
 * Shoc'no (voiced by TBA) - a

The Silver Moon Coven
The Silver Moon Coven is a criminal organization of warlocks and witches that rules over the Magic Realm’s criminal underworld who seek to spread their witchcraft illegally all over the Magic Realm.
 * Brencis Blackwood (voiced by Alec Baldwin) - a warlock who is a notorious crime lord, a powerful businessman, a member of the Silver Moon Coven and the head of Human World operations. He had become one of the group's most recurring enemies, then eventually became one of the tertiary antagonists of season four.
 * Deron "Derry" Vossen (voiced by Joe Pantoliano) - a short-tempered and violent warlock who is an mob enforcer for the Silver Moon Coven and the right-hand to Blackwood. He is a parody of Tommy DeVito from the 1990 film Goodfellas.
 * Ginevra Digby (voiced by Sugar Lyn Beard) - a witch who is Blackwood’s mistress.
 * Franziska Jinx (voiced by Susan Sarandon) - a witch who is a powerful drug lord, a member of the Silver Moon Coven and a hotel tycoon who owns The Gold Cauldron Hotel and Casino. ("Ocean’s 2000")
 * Vulgramm (voiced by Isaac C. Singleton Jr.) - a golem who is the head of security of The Gold Cauldron Hotel and Casino and a enforcer/right-hand to Jinx. ("Ocean’s 2000")
 * Leland Trevil (voiced by Patrick Stewart) - a Mick Jagger-fashioned warlock who is a English mobster, a member of the Silver Moon Coven and the leader of Shadowmoon Gang, a subsidiary to The Silver Moon Coven. ("Spring Break")
 * Draigh Latimer (voiced by Michael Jai White) - a street-wise bokor who is a mobster, a savate expert, a potions trafficker and a member of the Silver Moon Coven. ("TBA")
 * Vincent Void (voiced by Troy Baker) - a warlock who is an assassin for the Silver Moon Coven. He is based on the character Vincent Vega from the 1994 film Pulp Fiction.
 * Jules Whisper (voiced by Phil LaMarr) - a warlock who is an assassin for the Silver Moon Coven. He is based on the character Jules Winnfield from the 1994 film Pulp Fiction.
 * Don Alastair Caligari (voiced by Werner Herzog) - a disabled warlock who is a fearsome and powerful mob kingpin of the Magic Realm, the leader of the Silver Moon Coven and the head of the Caligari Crime Family. ("The Witch Hunter Part 2")
 * Galahad Stocker (voiced by Willem Dafoe) - a warlock who is the lieutenant of the Silver Moon Coven and the consigliere of the Caligari Crime Family. ("The Witch Hunter Part 1" and "The Witch Hunter Part 2")
 * Malum (voiced by Fred Tatasciore) - a huge, muscle-bound warlock who is a member of the Silver Moon Coven and Caligari’s chief bodyguard. ("The Witch Hunter Part 2")

The Dragon Fang Society
The Dragon Fang Society (龙方社) is an international organization of assassins, ninjas and mercenaries from all over the world.
 * Master Shi Gengxin (voiced by James Hong) - an enigmatic and ruthless ex-triad member who is the leader of The Dragon Fang Society.
 * Catarina Morillo  (voiced by Ana de Armas) - a highly skilled Hispanic assassin who is member of The Dragon Fang Society and Gengxin's adopted daughter. From the second half of season 3 to the first half of season 4, she has a private on and off relationship with Holly.
 * Tian Gengxin (voiced by Awkwafina) - an assassin and Gengxin's biological daughter who is a member of The Dragon Fang Society.
 * Adonis Coetzee (voiced by Kevin Michael Richardson) - an exceptionally large, muscular ex-Recce who is a member of The Dragon Fang Society.
 * Ouji Kakuzo (voiced by James Sie) - a Japanese ex-gang member who is a member of The Dragon Fang Society.
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a

The New Salem Brigade
The New Salem Brigade is an extremist paramilitary group whose sole purpose is to hunt down and kill all magical beings. Under the leadership of Commander Theodoric, they are under the belief that those who use magic are a threat to humanity and need to be wiped out, by any means necessary. At the end of Season 3, it is revealed that they were actually a special forces unit sent by the Gallows Court.
 * Captain Theodoric (voiced by Casper Van Dien) - the ruthless and iron-fisted leader of The New Salem Brigade who seeks to eradicate all magic beings. He serves as the main antagonist of season three.
 * Griseldis / Zelda Rosewood (voiced by Daisy Ridley) - a younger member of The New Salem Brigade who is sent undercover as an exchange student at Jimmy Carter High School in order to get close to the group. She serves as the secondary antagonist of season three.
 * Haveron (voiced by Jake Busey) - a violent and psychologically-insane member of The New Salem Brigade.
 * Kyrstyan (voiced by Dina Meyer) - a member of The New Salem Brigade.
 * Perceval (voiced by Phil Morris) - a member of The New Salem Brigade.

The Gallows Court
The Gallows Court is an anti-magic secret society of religious fanatics and far-right individuals who see themselves as "Soldiers of God" whose main objective is to eradicate magic and go into a genocidal war against all who use magic due to the belief that those who use magic are threats to humanity and servants of the Devil. It's also said that they often manipulate people into joining them, stating that they will be "rewarded" by the lord for their services.
 * Supreme Minister Arthur Slade (voiced by Christopher Lloyd) - a zealous and manipulative fanatic who is the leader of The Gallows Court who seeks to "cleanse" the world of fantasy creatures and magic. He serves as the main antagonist of season four. He is a parody of Emperor Palpatine from the Star Wars franchise.
 * Mr. Lewis (voiced by Burn Gorman) - Slade’s faithful but neurotic assistant.
 * Derrick Ramsdell (voiced by Troy Baker) - a sadistic mercenary who is the field commander of the Cleansers, The Gallows Court’s paramilitary force.
 * Reverend Gosart and Reverend D'Cunha (voiced by John DiMaggio and Kumail Nanjiani) - a pair of ex-televangelists and conspiracy theorists who are members of the Gallows Court and advisers to Slade.
 * Martha Vanderhoove (voiced by Allison Janney) - a lobbyist who is a spy and member of the Gallows Court sent undercover as the new superintendent of the Calebridge Unified School District. She is a parody of Dolores Umbridge from Harry Potter and Besty DeVos.
 * Elsa Brodsky (voiced by Leah Remini) - a hypnotist who is a member of the Gallows Court. ("Homecoming")
 * Dr. Armand Coldbank (voiced by Ralph Fiennes) - a psychiatrist who is a member of the Gallows Court and the head of the New Horizon program. ("After Dark" and "Misfits")
 * Edward Knoxley (voiced by Jeff Bennett) - a lawyer sent by the Gallows Court to sabotage Isabella's discrimination case. ("Estévez vs The School")
 * Jack Tumwell (voiced by Jim Carrey) - a crackpot and zany but accident-prone spy for the Gallows Court. He serves as the secondary antagonist of season 5. (Season 5)
 * Mr. Wormleigh (voiced by Brad Dourif) - a spy for the Gallows Court who was planted to the Bush administration as President Bush's "personal vizier". He is a parody of Gríma Wormtongue from Lord of the Rings. (Season 6)

Magic Realm

 * Morganna Le Fey (voiced by Christina Ricci) - a powerful sorceress from Arthurian Legend who was a former apprentice to Merlin who was imprisoned in stone by him. When she awakens from her prison, she develops amnesia and then takes on a life of crime as a weapons dealer, selling enchanted weaponry to human criminals, after meeting two criminals. She serves as the main antagonist of season two.
 * Callum Wendrake / Tallus (voiced by Benedict Cumberbatch) - the controlling and malevolent spirit of a deceased warlock. He serves as the titular central antagonist of season 4.
 * Captain Graskom (voiced by Ian McShane) - a great white shark humanoid who is a pirate captain, the leader of the Sea Demons crew, and the captain of The Kraken’s Strike ship.
 * Haglyr (voiced by Steve Blum) - a barracuda humanoid who is a high-ranking crewmember of the Sea Demons crew and Graskom’s first mate onboard The Kraken’s Strike.
 * Kerkok (voiced by John DiMaggio) - a red lionfish humanoid who is a crewmember of the Sea Demons crew onboard The Kraken’s Strike.
 * Bligri (voiced by Kevin Michael Richardson) - a fiddler crab humaniod who is a crewmember of the Sea Demons crew onboard The Kraken’s Strike.
 * Scoshyl (voiced by Corey Burton) - a moray eel humanoid who is a crewmember of the Sea Demons crew onboard The Kraken’s Strike.
 * Trabsax (voiced by Brian Bloom) - a stingray humanoid who is a crewmember of the Sea Demons crew onboard The Kraken’s Strike.
 * Bogarrin (voiced by Robert Costanzo) - a slug-like creature who is a black market dealer, businessman and slave trafficker who sells illegal items and slaves for profit in the Magic Realm’s criminal underworld. He is a parody of Jabba the Hutt from the Star Wars franchise.
 * Chalto (voiced by Jason Spisak) - a lizardfolk who is the right-hand to Bogarrin.
 * Otho Harfoot (voiced by Rob Paulson) - a fast-talking hobbit who is an auctioneer host.
 * Xadegark (voiced by JB Blanc) - an ogre who is a henchmen for Bogarrin.
 * Bralash (voiced by Nolan North) - a satyr who is a henchmen for Bogarrin.
 * Chief Thraggok (voiced by Tom Lister Jr.) - the ruthless and brutish orc chieftain of the Throgaksmasher Orc clan and Merigoth's nemesis.
 * Lord Tyrdrath (voiced by Richard E. Grant) - a dark elven archduke who is the sovereign ruler of The Keigaldri Kingdom who constantly terrorizes the Thelhshys Kingdom.
 * Queen Lorelina (voiced by Rachel Bloom) - a siren who is the leader of the sirens who rules the dark depths of the Magic Realm's ocean.
 * Zadicus (voiced by David Tennant) - a sadistic and psychopathic dark mage who is a freelance criminal-for-hire, weapons trafficker and potion dealer in the Magic Realm’s criminal underworld. He is a recurring antagonist in the series, eventually appearing as the secondary antagonist of season four.
 * Lady Morticia (voiced by Charlize Theron) - a ruthless and thrill-seeking demoness.
 * Raglon (voiced by Corey Burton) - a cold and ruthless blue demon who is a bounty hunter in the Magic Realm’s criminal underworld.
 * Kelvhan and Akkar - a pair of mute twin elves who are bounty hunters and assassins in the Magic Realm’s criminal underworld. They are a parody of the Twins from The Matrix Reloaded.

Human World

 * Christine DeLois (voiced by Emma Roberts) - a street-smart female criminal who works for Morganna Le Fey. She serves as one of the secondary antagonists of season two.
 * Billy Garson (voiced by J. B. Smoove) - Christine’s dimwitted partner-in-crime who works for Morganna Le Fey. He serves as one of the secondary antagonists of season two.
 * Mr. Nicodemus Kemp / Dr. Hazard (voiced by Dee Bradley Baker) - a former science teacher-turned-mad scientist who wants to use magic for his science experiments. On occasions, he would be employed by various villains in the series.
 * Brigadier General Alexander "Solid" Gould (voiced by Jonathan Banks) - a stubborn and gruff U.S. Army general officer who is the commanding officer of Project Paladin, a top-secret military task force whose sole purpose is to capture fantasy creatures and magic users. He is one of the few people who knows about The Enchanted Guild (mainly Ronin) and the group’s activity.
 * Major Lauren Ping (voiced by Kelly Hu) - a U.S. Army major who is a member of Project Paladin and Gould's assistant.
 * Captain Xavier Santiago (voiced by George Lopez) - a U.S. Army captain in the U.S. Army Rangers who is a member of Project Paladin. (Season 6)
 * Staff Sergeant Billy Malone (voiced by Frankie Muniz) - a U.S Marine Corps staff sergeant who is a member of Project Paladin. (Season 6)
 * First Lieutenant Allison Walker (voiced by Christy Carlson Romano) - a U.S. Army first lieutenant who is a member of Project Paladin. (Season 6)
 * Technical Sergeant Louis Marshall (voiced by Phil Morris) - a U.S. Air Force technical sergeant who is a member of Project Paladin. (Season 6)
 * Walter "Doug" Dougray / Godfree / Blood Patriot (voiced by Glenn Howerton) - a former U.S. Army master sergeant-turned-technically advanced mercenary who technologically modified the armor of the Red Knight.
 * Victor Mathias (voiced by Malcolm McDowell) -
 * Zachery Thane (voiced by Christopher McDonald) -
 * Garrett "Gator" Roy / Gator Roy (voiced by Steve Blum) - a deadly criminal who became a test subject in an experiment of a genetics company that turned him into a colossal 10-ft tall alligator-like humanoid hybrid. He is a loosely based parody on Killer Croc from the Batman franchise and his name is pun on Gatorade.

Minor Antagonists

 * Warren Scullfinger / The Duke (voiced by Nolan North) - a cockney wealthy businessman who is secretly a international crime lord known as The Duke.
 * Brigadier Hans Obermann (Alan Tudyk) - a former Austrian military brigadier general turned warlord who is the ruling dictator of the fictional nation Lutroistein. ("Lutroistein", "TBA" and "TBA")
 * The Shattered Glass Circle - a group of goths students turned witch coven at Jimmy Carter High School.
 * Roxanne "Melisanda" Jenkins (voiced by Fairuzka Balk) - a goth student at Jimmy Carter High School who is the leader of the Shattered Glass Circle who befriends Elle for her powers. ("Split Break (Part 3): Witches be Crazy", "Witch Hunt 2" and "TBA")
 * Darcy "Hilduara" Mills (voiced by Rachel True) - a student at Jimmy Carter High School and a member of the Shattered Glass Circle. ("Split Break (Part 3): Witches be Crazy", "TBA" and "TBA")
 * Sasha "Gelvira" Vinecombe (voiced by Robin Tunney) - a student at Jimmy Carter High School and a member of the Shattered Glass Circle. ("Split Break (Part 3): Witches be Crazy", "TBA" and "TBA")
 * The High Intelligence (voiced by Tim Curry) - a highly-intelligent alien entity who has the ability to spread his consciousnesses into other lifeforms by infecting them with alien parasites. ("Hive Mind" and "TBA")
 * The Game Controller (voiced by Eddie Izzard) - a flamboyant interdimensional being who manipulates living beings into playing deadly games (he "borrows" from earth) against their will for his own amusement. He is a parody of Grandmaster from Marvel Comics. ("Game Night" and "Game Night 2: Electric Boogaloo")

Real Life Characters
Various celebrities and public figures appear in the series either being portrayed by themselves or an actor or are shown via archive footage.
 * Bob Saget - a comedian and actor who hosts the television video clip series America’s Funniest Home Videos via archival footage. ("Pilot")
 * Victoria Beckham (voiced by herself) - a singer and a member of the Spice Girls who is hosting "MTV Spring Break". ("Spring Break")
 * Mel B (voiced by herself) - a singer and a member of the Spice Girls who is hosting "MTV Spring Break". ("Spring Break")
 * Melanie C (voiced by herself) - a singer and a member of the Spice Girls who is hosting "MTV Spring Break". ("Spring Break")
 * Emma Bunton (voiced by herself) - a singer and a member of the Spice Girls who is hosting "MTV Spring Break". ("Spring Break")
 * Geri Halliwell (voiced by herself) - a singer and a member of the Spice Girls who is hosting "MTV Spring Break". ("Spring Break")
 * Billy Crystal - a comedian and actor who is hosting the 1998 Academy Awards via archival footage. ("Life is Cinematic")
 * Celine Dion - a singer who is performing My Heart Will Go On at the 1998 Academy Awards via archival footage. ("Life is Cinematic")
 * Jerry Springer (voiced by himself) - a television presenter and the host of the tabloid talk show, The Jerry Springer Show. ("Exposed")
 * President Bill Clinton - the 42nd President of the United States from 1993 to 2001 appears via archival footage. ("TBA" and "TBA")
 * Pope John Paul (voiced by Maurice LaMarche) - the head of the Catholic Church and sovereign of the Vatican City State from 1978 to 2005. ("Inner Demon")
 * President George W. Bush (voiced by James Adomian) - the 43rd President of the United States from 2001 to 2009. (Season 6)
 * Vice President Dick Cheney (voiced by Steven Blum) - the 46th Vice President of the United States from 2001 to 2009. (Season 6)
 * Secretary Donald Rumsfeld (voiced by Maurice LaMarche) - the 21st U.S. Secretary of Defense from 2001 to 2006. (Season 6)
 * Secretary Colin Powell (voiced by Phil LaMarr) - the 65th U.S. Secretary of State from 2001 to 2005. (Season 6)
 * General Richard Myers (voiced by Jim Meskimen) - the Chairman of the Joint Chiefs of Staff from 2001 to 2005. (Season 6)
 * Secretary Tom Ridge (voiced by Robin Atkin Downes) - the United States Secretary of Homeland Security from 2003 to 2005. (Season 6)
 * Andrew Card (voiced by Maurice LaMarche) - the White House Chief of Staff from 2001 to 2006. (Season 6)
 * Ari Fleischer (voiced by Chris Cox) - the White House Press Secretary from 2001 to 2003. (Season 6)

Season 1

 * Erodjan (voiced by Chazz Palminteri) - a troll who is a mob boss and the head of a sex trafficking ring called Hallowe dglade. ("Caged")
 * Gnorax (voiced by Gary Anthony Williams) - a minotaur who is a henchman to Erodjan. ("Caged")
 * Warstrike (voiced by John P. Farley) - an ifrit who is a henchman to Erodjan. ("Caged")
 * Xiryth (voiced by Kari Wahlgren) - a harpy who is a henchman to Erodjan. ("Caged")
 * Dryhokk (voiced by Phil LaMarr) - a gnoll who is a henchman to Erodjan. ("Caged")
 * Hikaru (voiced by Jennifer Hale) - a female cat humanoid who was kidnapped by the Hallowglade sex trafficking ring. ("Caged")
 * Corrissa (voiced by Colleen Villard) - a mermaid who was kidnapped by the Hallowglade sex trafficking ring. ("Caged")
 * Falfiyi (voiced by Tara Strong) - a sylph who was kidnapped by the Hallowglade sex trafficking ring. ("Caged")
 * Nomira (voiced by Grey DeLisle) - a nymph who was kidnapped by the Hallowglade sex trafficking ring. ("Caged")
 * Breathjaw (voiced by Christopher Judge) - a reclusive hellhound who was betrayed by his pack who is fond of Elle’s company. ("Lone Wolf at Heart")
 * Mulgrord (voiced by Richard Moll) - a menacing hellhound who is the leader of a pack of hellhounds. ("Lone Wolf at Heart")
 * Eddie Doyle (voiced by Lucas Grabeel) - a student at Calebridge High School who sneaks his dad’s Playboy magazines to school. ("Explicit: A High School Mystery")
 * The Cryptkeeper (voiced by John Kassir) - the primary host of Tales from the Crypt. Kassir reprised his role from the series. ("A Study Group Halloween")

Season 2

 * The Supremes - an elite group of wealthy elves who once a year hunt down fantasy creatures who they find inferior for sport.
 * Lord Thuridan (voiced by David Thewlis) - a wealthy aristocratic elven esquire who the creator of the hunting game. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Lady Symania (voiced by Samantha Bond) - an elven socialite and Thuridan's wife. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Vuduin (voiced by Arnold Vosloo) - an elven hunter who is leading the hunting game. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Lord Deldrach (voiced by JB Blanc) - an elven marquess. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Lord Othorion (voiced by S Scott Bullock) - an elven baron. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Lady Ashera (voiced by Laura Bailey) - an elven viscountess. ("Welcome to the Magic Realm (Part 1)" and "Welcome to the Magic Realm (Part 2)")
 * Vulzal (voiced by Robin Atkin Downes) - a troll who is a target in the hunting game. ("Welcome to the Magic Realm (Part 1)")
 * Chosta (voiced by Dee Bradley Baker) - a naga who is a target in the hunting game. ("Welcome to the Magic Realm (Part 1)")
 * Retrath (voiced by Kevin Michael Richardson) - a minotaur who is a target in the hunting game. ("Welcome to the Magic Realm (Part 1)")
 * Warig (voiced by Tom Kenny) - a ogre who is a target in the hunting game. ("Welcome to the Magic Realm (Part 1)")
 * Carmen Sandiego (voiced by Rita Moreno) - a mysterious international thief and the head of organization V.I.L.E. Moreno reprises her role from the series. ("Where The Hell is Carmen Sandeigo?")
 * Ivy (voiced by Jennifer Hale) - a detective from the ACME Detective Agency and Zack’s older sister. Hale reprises her role from the series. ("Where The Hell is Carmen Sandeigo?")
 * Zach (voiced by Scott Menville) - a detective from the ACME Detective Agency and Ivy’s younger brother. Menville reprises her role from the series. ("Where The Hell is Carmen Sandeigo?")
 * The Chief (voiced by Daran Norris) - an computer A.I. who helps Ivy and Zack by providing them with information. ("Where The Hell is Carmen Sandeigo?")
 * Zunabar (voiced by William Shatner) - a cunning blue troll who is a an experienced poker player and card shark. ("Ocean’s 2000")
 * Snynkur (voiced by Eddie Murphy) - a Don King-like gnome who is a match fixer and entertainment promoter. ("American Warrior")
 * Ekon The Unstoppable (voiced by Big Show) - an imposing troll who is the undefeated champion of the Warrior Games. ("American Warrior")
 * Bellows (voiced by Michael Buffer) - a fairy who is the ring announcer of the Warrior Games. ("American Warrior")
 * ("Jazz") Jazzaam the Fabulous (voiced by Billy Porter) - an extravagant, benevolent and sassy Jinn who has the power to grant three wishes to those who control his magic lamp. ("School Election")
 * Tessa Hardwin (voiced by Rachael Leigh Cook) - a senior student at Calebridge High School and previous student body president who will resign by the end of the school year for her college career. ("School Election")
 * Jamie Farnon (voiced by Kaitlin Olson) - an overachieving and manipulative student at Calebridge High School, Tessa's best friend and a candidate for student body president. She is a parody of Tracy Flick from the 1999 film Election and Jafar from 1992 film Aladdin. ("School Election")
 * Bullethead Bill (voiced by Brad Garrett) - an obese gangster from Brooklyn, New York City who is a first time client for Morganna. ("TBA")
 * Prince Galaeron (voiced by Billy Zane) - the arrogant and snobbish elven Duke of Onal Nalore who is Princess Eirika’s fiancé. ("Tales from the Magic Realm: The Princess’ Bodyguard" & "Love or Conquer")
 * Tommy Coltrane (voiced by Tom Holland) - a boy who Elle had a crush on in middle school but was rejected by him whom she impersonates via a surprising similar vocal impression of him. ("Unlisted")
 * Dr. Clarence Davis (voiced by TBA) - a scientist turned CEO of a bio-engineering research company called Davis Enterprise. ("Chomp!")
 * Caleb (voiced by Wesley Snipes) - a ruthless drug dealer and leader of the Crimson Route Boys. ("Street Fantasy")
 * Ernie/Erasades (voiced by TBA) - a hungry male lamia who poses as a human ice cream vendor to lure children and trap them. ("The Ice Cream Man")
 * Warchief Wauktug (voiced by Dennis Haysbert) - the ancestral orc warchief of all the orc clans in the Magic Realm from thousands of year ago. ("Tales from the Magic Realm: The Great Magic War")

Season 3

 * Medusa (voiced by Mindy Kaling) - the legendary mortal gorgon from Greek mythology who speaks with a valley girl accent. ("Snake Bite")
 * Nick Henderson (voiced by John Krasinski) - a boy from Seal Coast High whom Courtney dated during the summer who may be the father of her baby. ("Sex Ed")
 * Señor Lautaro Montenegro (voiced by Guillermo del Toro) - the organizer of the Calebridge Hispanic Pride Festival. ("Orgullo Hispano (Hispanic Pride): A Hispanic Heritage Special")
 * Hector Quintero (voiced by Benicio del Toro) - an antiquities collector who plans to steal the artifacts from the museum during the Calebridge Hispanic Pride Festival. ("Orgullo Hispano (Hispanic Pride): A Hispanic Heritage Special")
 * Dr. Kradshaw (voiced by Alfred Molina) - a corrupt veterinarian who is secretly the leader of group of exotic animal smugglers. ("Dragon Shots")
 * Lem (voiced by Rob Paulson) - one of Kradshaw's henchmen. ("Dragon Shots")
 * Bryar (voiced by Nolan North) - one of Kradshaw's henchmen. ("Dragon Shots")
 * Salem Saberhagen (voiced by Nick Bakay) - a 500-year-old witch turned into a talking cat who has swallowed her magic "time ball" to blast everyone back to 1987. Bakay reprises his role from the series. ("Bangin'")
 * Sabrina Spellman (voiced by Melissa Joan Hart) - a teenage witch who is searching for her cat Salem who has swallowed her magic "time ball" to blast everyone back to time. Hart reprises her role from the series. ("Bangin'")
 * Ethan Addams (voiced by Miles Teller) - a camp counselor who had a dark past with Holly. ("Shamed")
 * Dr. Felicia Callahan (voiced by Mira Sorvino) - a therapist that Holly goes to see to discuss her past. ("Shamed")
 * Alex Mack (voiced by Larisa Oleynik) - a teenage girl from Paradise Valley who has extraordinary powers from a chemical accident. Oleynik reprises her role from the series. ("Enter The Secret World")
 * Chandrelle (voiced by Fran Drescher) - a nasally voiced elf who is the Erikia and Bat’s wedding planner. ("My Big Fat Magical Wedding Part 1" and "My Big Fat Magical Wedding Part 2")
 * Nelly (voiced by Kristin Chenoweth) - a pixie who is a gossip columnist of the Soaring Pegasus, a media outlet in the Magic Realm. ("My Big Fat Magical Wedding Part 1" and "My Big Fat Magical Wedding Part 2")
 * Cupid (voiced by Danny DeVito) - the god of love who resembles a winged naked boy with a bow and arrow but speaks in an adult man’s voice. ("The Valentine’s Day Dance: A Copyrighted Musical")
 * Ariel (voiced by Scarlett Johansson) - an archangel who wants to escape a toxic relationship she had with Naberius. ("The Valentine’s Day Dance: A Copyrighted Musical")
 * Naberius (voiced by Jeremy Renner) - a demon who is a Marquess of Hell and Ariel’s ex-boyfriend who tries to win her back. ("The Valentine’s Day Dance: A Copyrighted Musical").
 * Otis Phoenix (voiced by Timothy Olyphant) - an incarcerated cult leader who leads an environmental terrorist commune called The Second Flood. ("Split Break (Part 2): Second Calling")
 * Destiny (voiced by Mila Kunis) - a devoted member of The Second Flood and Phoenix's lover. ("Split Break (Part 2): Second Calling")
 * Buffy Summers (voiced by Sarah Michelle Gellar) - "The Slayer", one in a long line of young girls chosen by fate to battle evil forces in the form of vampires and demons. ("Wizard vs Slayer")

Season 4

 * Santa Claus (voiced by Jeff Bridges) - a benevolent legendary figure who bring gifts to children on Christmas Eve. ("The Study Group Saves Christmas")
 * Berry (voiced by David Krumholtz) - the head elf-in-charge of Santa's work shop. ("The Study Group Saves Christmas")
 * Miriam Claus (voiced by Carol Kane) - Santa's wife and the caretaker of the North Pole. ("The Study Group Saves Christmas")
 * Mort Larby (voiced by Sinbad) - a mail carrier who has a rivalry with Aaron during the holiday shopping season. ("The Study Group Saves Christmas")
 * Bryce Emmons (voiced by Freddie Prinze Jr.) - the alpha-male leader of a group of jocks from a rival high school who plan to steal the Calebridge High School mascot. ("Homecoming")
 * Urðr, Verðandi and Skuld (voiced by Shannen Doherty, Holly Marie Combs and Alyssa Milano) - a trio of Norns that are described as deciding the fates of people.
 * Zonlor (voiced by F. Murray Abraham) - a spiritual and intellectual zaratan who communicates with telepathy. ("Who Am I?")
 * God (voiced by TBA) - The Supreme Being who is the creator of the Universe. ("A Study Group Easter")
 * Brandon Jaskolski (voiced by Edward Norton) - an ACLU attorney hired by Isabella’s parents to take her discrimination case. ("Estévez vs The School")
 * Judge Dale McKinley (voiced by David Strathairn) - a judge of the San Diego County Superior Court who presides over Isabella’s discrimination case. ("Estévez vs The School")
 * Eustace Fletcher (voiced by John Lithgow) - an ex-member of the Gallows Court who went into hiding when trying to expose them. ("TBA" and "TBA")
 * Johmarcus Tillman (voiced by Louis Gossett Jr.) - an elderly retired political activist and a member of the Black Panthers. ("TBA", "Prom Night Part 1", "Prom Night Part 2" and "Prom Night Part 3")

Season 5

 * Dean Joseph Linderman (voiced by Wallace Shawn) - the ill-tempered dean of Aaron's college.
 * Cadet Wesley Adams (voiced by Channing Tatum) - a cadet at a military school.
 * Cadet Matt Roberts (voiced by Shia LaBeouf) - a cadet at Jake's police academy.
 * Sergeant Evans (voiced by Adam Sandler) - a drill instructor at Jake's police academy.
 * Bartholomew Hargreave (voiced by RuPaul) - an instructor at Holly's fashion college.
 * Trixy (7R1XY) (voiced by Christina Hendricks) - a college student at Flint and Elle's college.
 * Maestro (M4357R0) (voiced by Diego Luna) - a college student at Flint and Elle's college.
 * Pierce (P13RC3) (voiced by Matthew Lillard) - a college student at Flint and Elle's college.
 * Nighthawk (N16H7H4WK) (voiced by Corey Hawkins) - a college student at Flint and Elle's college.
 * Spider (5P1D3R) (voiced by Dee Bradley Baker) - a college student at Flint and Elle's college.
 * Phantasm (PH4N745M) (voiced by Jonny Lee Miller) - a
 * TBA (voiced by Jenna Fischer) - a
 * Anton Garrell (voiced by Dane DeHaan) - a college student at Aaron's college.
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a

Season 6

 * Stegothahl (voiced by Morgan Freeman) - an elder wizard who was Merlin's brother-in-arms during the Great Magic War who was thought to be dead.
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * Vramid (voiced by Jean Reno) - a noble gargoyle from Notre Dame who is the leader of Les sentinelles du Seigneur, a secret special forces unit of gargoyles created by God.
 * TBA and TBA (voiced by Penn Jillette and Teller) - a pair of illusionists.
 * Stan Marsh (voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Eric Cartman (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Randy Marsh (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Clyde Donovan (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Mr. Garrison (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Mr. Mackey (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Sgt. Harrison Yates (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Stephen Stotch (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Officer Barbrady (also voiced by Trey Parker) - ("Come on Down and Meet Some Friends of Mine")
 * Kyle Broflovski (voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Kenny McCormick (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Butters Stotch (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Gerald Broflovski (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Stuart McCormick (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Craig Tucker (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Tweek Tweak (also voiced by Matt Stone) - ("Come on Down and Meet Some Friends of Mine")
 * Sharon Marsh (voiced by April Stewart) - a
 * Wendy Testaburger (also voiced by April Stewart) - a
 * Liane Cartman (also voiced by April Stewart) - ("Come on Down and Meet Some Friends of Mine")
 * Shelly Marsh (also voiced by April Stewart) - ("Come on Down and Meet Some Friends of Mine")
 * Carol McCormick (also voiced by April Stewart) - ("Come on Down and Meet Some Friends of Mine")
 * Sheila Broflovski (voiced by Mona Marshall) - ("Come on Down and Meet Some Friends of Mine")
 * Linda Stotch (also voiced by Mona Marshall) - ("Come on Down and Meet Some Friends of Mine")
 * Token Black (voiced by Adrien Beard) - ("Come on Down and Meet Some Friends of Mine")
 * Heidi Turner (voiced by Jessica Makinson) - ("Come on Down and Meet Some Friends of Mine")
 * Mabel "Madea" Simmons (voiced by Tyler Perry) - a tough, streetwise and no-nonsense elderly woman and Mindy's aunt. Perry reprises his role from his film series. ("Hallelujer!")
 * Joe Simmons (also voiced by Tyler Perry) - Madea's older brother. ("Hallelujer!")
 * Brian Simmons (also voiced by Tyler Perry) - an attorney who is Madea's nephew and Joe's son. ("Hallelujer!")
 * Peter Griffin (voiced by Seth MacFarlane) - a ("Fallen")
 * Stewie Griffin (also voiced by Seth MacFarlane) - a ("Fallen")
 * Brian Griffin (also voiced by Seth MacFarlane) - a ("Fallen")
 * Tom Tucker (voiced by Seth MacFarlane) - a ("Fallen")
 * Dr. Hartman (also voiced by Seth MacFarlane) - a ("Fallen")
 * Glenn Quagmire (also voiced by Seth MacFarlane) - a ("Fallen")
 * Lois Griffin (voiced by Alex Borstein) - a ("Fallen")
 * Tricia Takanawa (also voiced by Alex Borstein) - a ("Fallen")
 * Chris Griffin (voiced by Seth Green) - a ("Fallen")
 * Meg Griffin (voiced by Mila Kunas) - a ("Fallen")
 * Joe Swanson (voiced by Patrick Warburton) - a ("Fallen")
 * TBA (voiced by Max Von Sydow) -
 * TBA (voiced by Ian McKellen) - a
 * Speaker Cornaith (voiced by Michael Gambon) - the elven Speaker of the House of Commons lower house of the Thelhshys Kingdom's Parliament. ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Speaker Erlareo (voiced by Bill Nighy) - the elven Speaker of the Elven House of Lords upper house of the Thelhshys Kingdom's Parliament. ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Captain Ranaeril (voiced by Sean Bean) - an elven army captain of an army unit for the Thelhshys Kingdom. ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Glalvrok (voiced by Johnny Knoxville) - a hobgoblin who is the leader of a brigandage gang of hobgoblins in the Magic Realm.
 * Nalaea (voiced by Naomi Scott) - an female elf from the Osath Alari elven village.
 * Sir Gamjee (voiced by TBA) - a troll warrior.
 * Smaragos (voiced by TBA) - a talking griffin.
 * Warchief TBA (voiced by TBA) - a ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Chief TBA (voiced by Ray Winstone) - a ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Chief TBA (voiced by TBA) - a ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Chief TBA (voiced by TBA) - a ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Chief TBA (voiced by TBA) - a ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Ásmund (voiced by Vin Diesel) - a 13 foot tall living knight statue that serves as the guardian of the Cave of Magic Crystals. ("The Battle of Gromurclaw Keep Part 1" and "The Battle of Gromurclaw Keep Part 2")
 * Commander Thrajurol (voiced by John Rhys-Davies) - an African bush elephant humanoid who is the leader of a resistance group called The Insurgents.
 * Rendrum (voiced by Benedict Wong) - a black rhinoceros humanoid who is the second-in-command of the Insurgents.
 * Ysabelon (voiced by Vanessa Kirby) - a female Indian leopard humanoid who is a member of the Insurgents.
 * Skraiwit (voiced by Andrew Kishino) - a tengu who is a scout and member of the Insurgents.
 * TBA (voiced by TBA) - a TBA who is the weapons specialist and member of the Insurgents.
 * TBA (voiced by TBA) - a TBA who is the medic and member of the Insurgents.
 * TBA (voiced by TBA) - a TBA who is a member of the Insurgents.
 * Griffo Brandywood (voiced by Tommy Wiseau) - an eccentric and not very bright but wise hobbit who is a hoarder of 90s Human World culture.
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * Erdlen (voiced by Mark Rylance) - an elderly Galápagos tortoise humanoid.
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a

TBA

 * King Arthur (voiced by Leonardo DiCaprio) - the legendary hero King of Britain from Arthurian Legend who tags along with the group on their trip.
 * Niri (voiced by Millie Bobby Brown), a young Starlian who crashed landed on earth and separated from her family.
 * The Black Knight (voiced by Hugo Weaving) - a ruthless black-armored knight from Arthurian Legend who seeks Niri for her powers. He serves as the main antagonist of the film.
 * Queen Guinevere (voiced by Kate Winslet) - Arthur's wife and the Queen of Britain from Arthurian Legend.
 * Lancelot (voiced by Bobby Cannavale) - the second-in-command of the Knights of the Round Table from Arthurian Legend.
 * Ralmus (voiced by Snoop Dogg) - a benevolent and smooth-talking Celestian who runs a novelty shop in Spain.
 * Tolnad and Milulo (voiced by Kenan Thompson and Kel Mitchell) - a duo of comedic and fun-loving Celestians who are employees at Ralmus' shop.
 * Dagonet (voiced by Eric Idle) - Arthur's noble but buffoonish jester and herald from Arthurian Legend.
 * Special Agent Dominic Houghton (voiced by Pierce Brosnan) a Secret Intelligence Service special agent who's pursuing the group during their trip.
 * King Leodegrance (voiced by Chris Parnell) - the ruler of Cameliard and Guinevere's father.
 * Sir Galahad (voiced by Chris O'Dowd) - a member of the Knights of the Round Table from Arthurian Legend.
 * Sir Bedivere (voiced by Olafur Darri Olafsson) - a member of the Knights of the Round Table from Arthurian Legend.
 * Sir Percival (voiced by Michael Sheen) - a member of the Knights of the Round Table from Arthurian Legend.
 * Sir Gawain (voiced by James Arnold Taylor) - a member of the Knights of the Round Table from Arthurian Legend.
 * Sir Tristan (voiced by John DiMaggio) - a member of the Knights of the Round Table from Arthurian Legend.
 * Sir Moriaen (voiced by Fred Tatasciore) - a member of the Knights of the Round Table from Arthurian Legend.
 * Silniam (voiced by TBA) - a Starlian who is Niri's father and Kolmu's husband.
 * Kolmu (voiced by TBA) - a Starlian who is Niri's mother and Silniam's wife.

Other Cast Members
Kevin Michael Richardson, Rob Paulson, Tom Kenny, Grey Delisle, Kari Wahlgren, Tara Strong, Fred Tatasciore, John DiMaggio, Carlos Alazraqui, Jennifer Hale, Dee Bradley Baker, Daran Norris, Corey Burton, Phil LaMarr, Maurice LaMarche, Jim Cummings, Jeff Bennett, Tom Kane, Robin Atkin Downes, Steven Blum, Laura Bailey, Jess Harnell, Frank Welker, Mindy Sterling, James Arnold Taylor, Travis Willingham, Jeff Bergman, Khary Payton, Maria Bamford, Keith Ferguson, Nolan North, Josh Robert Thompson, Ross Marquand, Brian Bloom, Jill Talley, Stephen Stanton, S. Scott Bullock, David Kaye, Jason Spisak, JB Blanc, Chris Cox, Jim Meskimen, Lloyd Sherr and Steven Barr have additional voice roles as one or more characters in the series.

Trivia

 * The series is rated TV-14.
 * The series is distributed by Netflix, while being produced by Adelaide Productions.
 * Comedian Pablo Francisco did voice-over narration for the trailer of the first season in his impersonation of late voice-over artist Don LaFontaine.
 * The series was pitched as a parody and satire of fantasy shows, Saturday morning cartoons, teen dramas and 90s culture.