Study Group (TV series)

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

Premise
In the mid-1990s in San Diego, California, a group of high school students get into a string of adventures when an undercover wizard who’s been assigned to monitor magical activity in the city and stop dark forces that would put the human world in jeopardy and risk exposure of the Magical Realm.

Season 1
TBA.

Season 2
TBA.

Season 3
TBA.

Season 4
TBA.

Main Characters

 * Aaron Erland (voiced by Elijah Wood) - an ordinary meek student at Jimmy Carter High School and the reluctant leader of the group.
 * Sarah Taggert (voiced by Mae Whitman) - a smart, responsible and committed student at Jimmy Carter High School and the den mother of the group, often acting as Aaron’s second-in-command.
 * Jake Burton (voiced by Jason Mantzoukas) - a rebellious and trouble-making student at Jimmy Carter High School and a member of the group.
 * Holly Rodgers (voiced by Ellie Kemper) - a peppy and air-headed student at Jimmy Carter High School and a member of the group.
 * Flint Barlow (voiced by Thomas Middleditch) - a liberal raised student at Jimmy Carter High School and the political member of the group. He is Elle's only friend.
 * Eloise "Elle" Hannaway (voiced by Lizzy Caplan) - a cynical and sarcastic outcast 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.

Jimmy Carter High School

 * Lucy Armstong (voiced by Natalie Portman in season 1, Catherine Taber in all subsequent appearances since season 2) - an altruistic honor student at Jimmy Carter High School and Flint's love interest. She shares the same liberal beliefs as Flint, but she has remained closeted about them until she met Flint and they become the school's secondary power couple.
 * Jesselina "Jess" Byrnes (voiced by Riki Lindhome) - a pretty, self-centered and spoiled valley girl, the head cheerleader of the cheerleading squad and a popular student in Jimmy Carter High School.
 * Kurt Blunsky (voiced by Seth Green) - the mean, aggressive and boorish school bully and a student at Jimmy Carter High School.
 * Hunter McClane (voiced by Beck Bennett) - the handsome and skillful star quarterback of the football team and a student at Jimmy Carter High School.
 * Tyler Kelly (voiced by Sam Richardson) - the affable and compassionate center of the football team and a popular student at Jimmy Carter High School.
 * Courtney Meachum (voiced by Jenny Slate) - Jess’ best friend, a member of the cheerleading squad and a popular student at Jimmy Carter High School.
 * Jordan Qiang (voiced by Ali Wong) - an Chinese-American student at Jimmy Carter High School and a member of the cheerleading squad.
 * Greta Estévez (voiced by Gina Rodriguez) - a tough and feisty hispanic punk girl and a student at Jimmy Carter High School.
 * Cadecus "Cad" Hodgekiss (voiced by Macaulay Culkin) - a wealthy rich kid and a student at Jimmy Carter High School.
 * Takamaru “T.J.” Juichi (voiced by Masi Oka) - a Japanese-American slick hustler and a student at Jimmy Carter High School who imports various forms of Japanese media and sells them so he can pay for college.
 * Mindy Ellis (voiced by Keke Palmer) - the perfectionistic student body president and a student at Jimmy Carter High School.
 * TBA (voiced by TBA) - an overweight student at Jimmy Carter High School.
 * Kristy Skinner (voiced by Sarah Silverman) - a conservative-raised student at Jimmy Carter High School and Flint’s nemesis from their elementary school days.
 * Chaquille "DJ Alchemy" Mcdowell (voiced by Jay Pharoah) - an struggling rapper and a student at Jimmy Carter High School.
 * Principal Charles "Chuck" Plaskett (voiced by Michael Lerner) - the principal of Jimmy Carter High School.
 * Officer Gerry Ford (voiced by Rainn Wilson) - the stern security guard at Jimmy Carter High School.
 * Mr. Earl Slater (voiced by Steven Wright) - the grumpy homeroom teacher and history teacher at Jimmy Carter High School.
 * Mr. Fabian Garfield (voiced by Phil LaMarr) - the math teacher at Jimmy Carter High School.
 * Ms. Bette Losinski (voiced by Amy Poehler) - the current science teacher at Jimmy Carter High School.
 * Coach Roland Kletz (voiced by Rob Riggle) - the alpha male P.E. teacher at Jimmy Carter High School.
 * Mr. Rory Shepherd (voiced by Jack McBrayer) - the kind-hearted school counselor at Jimmy Carter High School.
 * Sr. Emanuel Sánchez (voiced by Carlos Alazraqui) - the spanish teacher at Jimmy Carter High School.
 * Ms. Evelyn Cobb (voiced by Tress MacNeille) - the art teacher of Jimmy Carter High School.
 * Mr. Morris Bishop (voiced by Jesse Tyler Ferguson) - the drama teacher at Jimmy Carter High School.
 * Ms. Janette Knapp (voiced by Molly Shannon) - the music teacher at Jimmy Carter High School.
 * Florence Talley (voiced by Conchata Ferrell) - a disgruntled lunch lady at Jimmy Carter High School.
 * Nurse Loraine Moore (voiced by Edie McClurg) - the cheery school nurse at Jimmy Carter High School.
 * Mr. "Fitz" Fitzsimmons (voiced by H. Jon Benjamin) - the stoner janitor at Jimmy Carter High School.

Families

 * Theodore “Ted” Erland (voiced by John Hodgeman) - Aaron and Liz’s father and Julia’s husband who works as an insurance agent.
 * Julia Erland (voiced by Rachael Leigh Cook) - Aaron and Liz’s mother and Ted’s wife who works as an accountant for a credit union called Summit Trust Credit Union.
 * Elizabeth “Lizzy” Erland (voiced by Eden Sher) - Aaron’s little sister and Ted and Julia’s daughter.
 * Howard Taggert (voiced by John Michael Higgins) - Sarah’s father and Nina’s husband.
 * Nina Taggert (voiced by Laurie Metcalf) - Sarah’s mother and Howard’s wife who works as a news producer at NBC 7 News on NBC 7/39.
 * Brennan Taggert (voiced by Jake Johnson) - Sarah’s older brother and Howard and Nina’s son who serves in the United States Military.
 * Dean Burton (voiced by Denis Leary) - Jake and Kelly’s father and Keira’s husband who works as a detective sergeant of the San Diego Police Department.
 * Keira Burton (voiced by Katey Sagal) - Jake and Kelly’s mother and Dean’s wife who work as a waitress at Denny’s.
 * Kelly Burton (voiced by Bridget Mendler) - Jake’s older sister and Keira and Dean’s daughter who attends community college.
 * Peter Rodgers (voiced by Stephen Root) - Holly’s father and Candace's husband.
 * Candace Rodgers (voiced by Megan Mullally) - Holly’s mother and Peter's wife.
 * Audrey Barlow (voiced by Debra Messing) - Flint's mother and Henry's wife.
 * Henry Barlow (voiced by Stephen Colbert) - Flint's father and Audrey's husband.
 * Poppy Hannaway (voiced by Paget Brewster) - Elle's widowed mother who works as a ED nurse.
 * 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.
 * Richford Hodgekiss (voiced by John O’Hurley) - a wealthy attorney and Drusilla's husband and Cad's father.
 * Drusilla Hodgekiss (voiced by Dana Delany) - a wealthy socialite and Richford's wife and Cad's mother.

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 aka The Chief (voiced by CCH Pounder) - the cold and mysterious director of Bureau of Supernatural Investigations.
 * Agent Tanner (voiced by Rob Paulson) - a B.S.I agent who serves as the right-hand to Clarkson.

Other characters

 * Superintendent Bernard McGilvary (voiced by Philip Baker Hall) - the superintendent of schools in San Diego and Principal Plaskett's superior.
 * Sheriff Marvin Dixon (voiced by Reginald VelJohnson) - the sheriff of the San Diego County Sheriff's Department.
 * 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)
 * Brianna Heitzman (voiced by Megan Boone) - a journalist for The San Diego Union-Tribune who’s investigating the magic activity that’s occurred in San Diego.
 * Jed Cappellini (voiced by John DiMaggio) - the landlord of Ronin’s apartment building.
 * Gavin Berkhimer (voiced by Tom Kenny) - the news anchor of NBC 7 News on NBC 7/39.
 * Zoey Weingart (voiced by Grey DeLisle) - the news co-anchor of NBC 7 News on NBC 7/39.
 * 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)
 * Bishop Darren Bonneville (voiced by Maurice LaMarche) - the bishop of the Catholic Diocese of San Deigo.
 * Chief Alec Winder (voiced by Fred Tatasciore) - the chief of San Diego Police Department.
 * Mayor Darryl Russell (voiced by Daran Norris) - the Leslie Neilson-like Mayor of San Diego.
 * Professor Abraham Van Helsing (voiced by Kelsey Grammer) - a cryptozoologist and a famed monster hunter. This version of character is based on the character Samuel Loomis from the Halloween film series and Warren Beatty's portrayal of the character Dick Tracy from the 1990 film of the same name. (Season 4)

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 Gekotaz (voiced by Harris Yulin) - a councilor of The Enchanted High Council and a leading official of The Enchanted Guild.
 * 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 Constance Zimmer) - 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.
 * 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". (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 the librarian and keeper of the scrolls in the Sanctum of Enchantment for The Enchanted Guild.
 * Captain Slexius (voiced by Michael Ironside) - a stern and no-nonsense wizard who is the commander of the Crimson Sentinels, the special forces militia for The Enchanted Guild.
 * 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 merfolk wizard and a member of The Enchanted Guild who patrols the underwater districts.
 * Rholyna (voiced by Grey DeLisle) - a 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 Lance Reddick) - a deceased experienced wizard, Ronin’s partner and a member of The Enchanted Guild who was killed by human police officers.
 * Ambrosius (voiced by Bob Newhart) - an wise and noble elder wizard who was Melin’s former partner and co-creator of The Enchanted Guild who is now a statesman for the guild.
 * Merlin (voiced by Liam Neeson) - the legendary wizard from Arthurian Legend who is the founder and co-creator of The Enchanted Guild. Following an altercation between him and Morganna Le Fey, he disappeared after he imprisoned Morganna and hasn't been seen since.

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 Paul Walter Hauser) - an orc and a member of the Gruggokbone Orc clan.
 * Zuhgan (voiced by Jimmy O. Yang) - an orc and a member of the Gruggokbone Orc clan.

The Thelhshys Kingdom

 * King Orndacil (voiced by Peter Serafinowicz) - the pompous elven king of the Thelhshys Kingdom and Eirika’s father.
 * Queen Myriani (voiced by Catherine Tate) - the posh elven queen of the Thelhshys Kingdom and Eirika’s mother.
 * Princess Eirika (voiced by Emma Watson) - an elven princess, the heir to the Thelhsys Kingdom and King Orndacil and Queen Myriani’s daughter.
 * Hagluin (voiced by John Oliver) - the royal advisor to King Orndacil.
 * Captain Belanor (voiced by Ray Park) - an elven knight who serves as the 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.
 * Adonia Highmore (voiced 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 snobbish 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 Bromdorli (voiced by John Goodman) - the dwarven ruler of the Bagh Garohm Kingdom.
 * Gruzaec (voiced by Tom Kane) - a dwarf
 * Norfaet (voiced by John DiMaggio) - a dwarf
 * Dhorhol (voiced by Fred Tatasciore) - a dwarf
 * Fidgrum (voiced by Jess Harnell) - a dwarf

Other characters

 * Krald (voiced by Steve Buscemi) - a sleazy goblin who is a magic dealer, gangster and Ronin’s underground informant in the Magic Realm.
 * Maalik (voiced by Jack Black) - a laidback troll who is the bartender and owner of The Rusty Unicorn Tavern and Inn in the Magic Realm.
 * Professor Ralpogh (voiced by David Hyde Pierce) - a brownie who is an alchemist and historian in the Magic Realm.
 * Madame Pilika Simmons (voiced by Whoopi Goldberg) - a spiritual shaman woman, a former oracle to The Enchanted Guild 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.
 * Brykkor (voiced by John DiMaggio) - a gnoll who is a farmer and bar regular of The Rusty Unicorn Tavern and Inn who speaks with a cockney accent.
 * Noldait (voiced by Ron Bottitta) - a satyr who is a bar regular of The Rusty Unicorn Tavern and Inn who speaks with a Scottish accent.
 * Commander Rutrius (voiced by Patrick Warburton) - a gruff minotaur who is the warden of the Howling Caverns Security Prison.
 * Griffo Brandywood (voiced by Tommy Wiseau) - an eccentric and not very bright but wise hobbit who is the owner of a service station and convenience store called The Lonely King.
 * Mick (voiced by Johnny Depp) - a charismatic but mischievous shapeshifter who is a con artist in the Magic Realm.
 * Chazixer (voiced by George Hamilton) - a playboy humanoid tiger-man who is a weathly businessman and the owner of The Crown Lotus Casino in the Magic Realm.
 * Nelly (voiced by Kristin Chenoweth) - a Hedda Hopper-like pixie who is a gossip columnist of the Soaring Pegasus, a media outlet in the Magic Realm.
 * Tedurok aka Teddy (voiced by Jess Harnell) - an orge who is the chef of The New Bites Diner in the Magic Realm.
 * Sheriff Reginalde (voiced by Charles Shaughnessy) - the sheriff of Tradebreak.
 * Mayor Henriet (voiced by Héctor Elizondo) - the Mayor of Tradebreak.

The Reborn Marauders
The Reborn Marauders is a organization of dark magic users, supernatural beings and magical 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.
 * Mag'zas The Darkmaster (voiced by Tim Curry) - 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 (voiced by James Spader) - a calculating and intelligent necromancer who is the current leader of The Reborn Marauders and the ruler of Malacan Mountain who seeks to resurrect his master Mag'zas. He serves as the main antagonist of the series.
 * General Stogmar (voiced by Matthew Wood) - a ruthless lich warrior who was the military commander of The Reborn Marauders Army who currently serves under Krelazar’s command.
 * Vanessa (voiced by Grey DeLisle) - a cunning and seductive vampiress who is an assassin for The Reborn Marauders and a right-hand henchwoman to Krelazar.
 * 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.
 * Zarthox (voiced by David Sobolov) - a dragonkin who is Balgriks' trusted lieutenant and enforcer to the Sky Demons.

The Silver Moon Coven
The Silver Moon Coven is a criminal organization made up 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 powerful warlock who is a notorious crime lord, a member of the Silver Moon Coven and the head of Human World operations.
 * Deron Vossen (voiced by Joe Pantoliano) - a warlock who is an enforcer and the right-hand to Blackwood.
 * 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 secuitry of The Gold Cauldron Hotel and Casino and a enforcer/right-hand to Jinx. ("Ocean’s 2000")
 * Leland Trevil (voiced by TBA) - a warlock who is a mob boss and a member of the Silver Moon Coven.
 * TBA (voiced by TBA) -
 * TBA (voiced by TBA) -
 * Don Alastair Caligari (voiced by Werner Herzog) - a German 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. (Season 5)
 * 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. (Season 5)
 * Malum (voiced by Fred Tatasciore) - a huge, muscle-bound warlock who is a member of the Silver Moon Coven and Caligari’s chief bodyguard. (Season 5)

Magic Realm

 * Morganna Le Fey (voiced by Christina Ricci) - a powerful enchantress from Arthurian Legend who was Merlin’s former apprentice who wants revenge on The Enchanted Guild for imprisoning her into stone. When she awakens from her prison, she decides to take on a career as a weapons dealer, selling enchanted weaponry to criminals. She serves as the main antagonist of season two.
 * Zadicus (voiced by David Tennant) - a sadistic and psychopathic dark mage who is a freelance criminal-for-hire, weapons trafficker and potion dealer.
 * 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 king and the ruler of The Keigaldri Kingdom who constantly terrorizes the Thelhshys Kingdom.
 * Bogarrin (voiced by Robert Costanzo) - a slug-like creature who is a black market dealer, businessman and slave trafficker.
 * Otho Harfoot (voiced by Rob Paulson) - a fast-talking hobbit who is a servant to Bogarrin and auctioneer host who sells illegal items and slaves for profit.
 * Xadegark (voiced by John DiMaggio) - an ogre who is a henchmen for Bogarrin.
 * Novpur (voiced by Nolan North) - a faun who is a henchmen for Bogarrin.

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 "Dr. Hazard" Kemp (voiced by Dee Bradley Baker) - a mad scientist who wants to use magic for his science experiments. He was once the former science teacher of Jimmy Carter High School until he was fired for an experiment Jake made that caused an explosion.
 * Brigadier Hans Obermann (Alan Tudyk) - the dictator of the fictional nation Lutroistein, an Austrian warlord and a former Austrian military brigadier general.
 * Warren "The Duke" Scullinger (voiced by Nolan North) - a cockney wealthy businessman who is secretly a international crime lord known as The Duke.
 * 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 loosely based on Killer Croc from the Batman franchise and his name is pun on Gatorade.

Season 1

 * Solazs (voiced by Keith Szarabajka) - a naga warrior sent by Krelazar to kill Ronin and Aaron. ("Pilot")
 * Mr. Fletcher (voiced by Wallace Shawn) - a flustered driver education teacher who is in charge of Jake’s drivers’ education exam. ("I Put a Spell on You")
 * Erodjan (voiced by Dan Hedaya) - a troll who is a mob boss and the head of a sex trafficking ring called Hallowedglade. ("Caged")
 * Gnorax (voiced by Gary Anthony Williams) - a minotaur who is a henchman to Erodjan and later worked for Krelazar when he killed Erodjan. (4 episodes)
 * Warstrike (voiced by John P. Farley) - an ifrit who is a henchman to Erodjan and later worked for Krelazar when he killed Erodjan. (4 episodes)
 * Xiryth (voiced by Kari Wahlgren) - a harpy who is a henchman to Erodjan and later worked for Krelazar when he killed Erodjan. (4 episodes)
 * Dryhokk (voiced by Phil LaMarr) - a gnoll who is a henchman to Erodjan and later worked for Krelazar when he killed Erodjan. (4 episodes)
 * Hikaru (voiced by Jennifer Hale) - a female catperson 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 and the leader of a pack of hellhounds. ("Lone Wolf at Heart")
 * Candyman (voiced by Tony Todd) - a vengeful ghost of an artist who was murdered in the late-18th century. Todd reprises his role from the film trilogy. ("The Candyman Can")
 * Eddie Doyle (voiced by Lucas Grabeel) - a student at Jimmy Carter High School who sneaks his dad’s Playboy magazines to school. ("Explicit: A High School Mystery")

Season 2

 * Carmen Sandiego (voiced by Rita Moreno) - a mysterious international thief and the head of organization V.I.L.E. ("Where The Hell is Carmen Sandeigo?")
 * Ivy (voiced by Jennifer Hale) - a detective from the ACME Detective Agency and Zack’s older sister. ("Where The Hell is Carmen Sandeigo?")
 * Zach (voiced by Scott Menville) - a detective from the ACME Detective Agency and Ivy’s younger brother. ("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")
 * Kasmif The Marvelous (voiced by Michael Buffer) - a genie who is the ring announcer of the Warrior Games. ("American Warrior")
 * Ernie/Erasades (voiced by Adam Sandler) - a hungry male lamia who poses as a human ice cream vendor to lure children and trap them. ("The Ice Cream Man")
 * Vortigern/Agent Vogel (voiced by Sean Bean) - a warlord from Arthurian Legend who now disguises as a men in black-esque government agent in order to search for his dragon. ("My Pet Dragon")
 * Ghostface (voiced by Roger L. Jackson) - a mysterious costumed serial killer from the slasher movie Scream. Jackson reprises his role from the film series. ("Aaahh!!!")
 * 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")
 * Caleb (voiced by Wesley Snipes) - a ruthless drug dealer and leader of the Red Sharktooth Boys. ("Street Fantasy")
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * TBA (voiced by TBA) - a
 * Batman/Bruce Wayne (voiced by Kevin Conroy) - a wealthy playboy CEO and owner of Wayne Enterprises from Gotham City who is secretly a masked vigilante. ("Magic Knight")
 * The Joker (voiced by Mark Hamill) - a psychopathic supervillain and the archenemy of Batman. ("Magic Knight")
 * Harley Quinn (voiced by Tara Strong) - the right-hand henchwoman and lover of the Joker. ("Magic Knight")
 * 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")

Other Cast Members
Kevin Michael Richardson, Rob Paulson, Tom Kenny, Grey Delisle, Kari Wahlgren, Tara Strong, Robin Atkin Downes, Fred Tatasciore, Steven Blum, Tom Kane, David Sobolov, Nolan North, Phil LaMarr, John DiMaggio, Maurice LaMarche, Jennifer Hale, Dee Bradley Baker, Jess Harnell and Laura Bailey 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 90 Saturday morning cartoons and fantasy shows and 90s culture.