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Arthur: All Grown Up is an American/Canadian children’s animated TV show. It premiered on August 31, 2020 on the TV channel Null. The show is the second spin-off of the successful PBS children's animated TV series, Arthur.

About the show

The show focuses on Arthur Read and the gang going to Middle School (Lakewood Middle School), D.W. and her friends going to 3rd grade, and Baby Kate going to preschool.


Major characters

  • Arthur Read - The main character of the show. His appearance is the same like in the main show, but he goes to bed at 10:00 PM now instead of 8:00 PM. Arthur and Francine Frensky are dating each other in the show, and they usually hang out every Saturday. They have been dating for 1 year, when Arthur broke up with Fern Walters, meaning that Arthur and Francine were 10 when they started dating. Arthur used to be 11 years old, until the season 2 episode "Arthur's 12th Birthday", when Arthur turned 12. Arthur is an aardvark. Arthur speaks English and a bit of Spanish.
  • Fern Walters - Arthur Read’s previous girlfriend. Fern dated Arthur for 1 year and 3 months, meaning they were 9 years old when Fern and Arthur started dating, and that they were 10 years old when they broke up. The main reason why Arthur broke up with Fern is because of the facts that Arthur and Fern rarely interacted with each other during their final months of their girlfriend/boyfriend relationship, Fern had lots of family issues going on, and that Arthur and Francine had huge crushes on each other and that Arthur decided to start dating Francine. However, even after Arthur and Fern’s breakup with each other, Arthur and Fern might still have very little crushes on each other. Fern’s bedtime is 9:30 PM. Fern is 11 years old. Fern is a dog.
  • Buster Baxter - Arthur Read’s best friend. Buster is currently dating Muffy Crosswire. Buster and Muffy have been dating each other for 3 years, meaning they started dating when they were 8 years old. Buster’s bedtime is 8:30 PM due to his low grades. Buster used to be 11 years old, until it was revealed that he turned 12 years old in the season 2 episode "Muffy Gets Grounded". Buster is a rabbit.
  • Muffy Crosswire - Francine Frensky's former best friend (Muffy and Francine stopped being friends after an argument between them in an episode). Muffy is dating Buster Baxter. Buster and Muffy have been dating each other for 3 years, meaning they started dating when they were 8 years old. Muffy's bedtime is 10:00 PM. Muffy used to be 11 years old, until it was revealed she turned 12 in the episode "Arthur and Maria", like most of her other friends. Muffy is a monkey.
  • Francine Frensky - Arthur Read's girlfriend. They have been dating for 1 year, meaning that they were 10 years old when they started dating. Francine even kissed Arthur in the season 1 episode titled Arthur’s First Real Kiss. Francine’s bedtime is 10:00 PM. Francine used to be 11 years old, until she turned 12 years old in the episode "Arthur and Maria". Francine is a few months older than Arthur. Francine is a monkey. She also dislikes cherry soda.
  • Binky Barnes - A bully in Arthur Read and his friend’s class. Binky is a bulldog. Binky used to be 12 years old, until he turned 13 in the episode "Arthur and Maria". Binky’s bedtime is 10:15 PM.
  • Alan Powers (also known as "The Brian/Brian") - A male bear who is friends with almost everyone in Lakewood Middle School. Brian is one of the smartest kids in Lakewood Middle School. He was 11 years old, until the Season 2 episode "Muffy Gets Grounded", when he is shown as a 12 year old.
  • Sue Ellen Armstrong - A female cat who is friends with most of the students in Lakewood Middle School. Sue Ellen has a crush on Brian and also tries to spend too much time with him, which is why Brian attempts to avoid Sue Ellen. Sue Ellen was 11 years old, until she turned 12 in the Season 2 episode "Muffy Gets Grounded".

Minor characters

  • George Lundgren - An 11 year old moose.


For information on the show's production, click/tap here.


Episode Name First aired Episode description Notes Episode number
Pilot March 2, 2020 (YouTube)

August 15, 2020 (Null App)

Arthur and his friends are getting ready to graduate from Lakewood Elementary School, but Arthur is disappointed the he is leaving because he will miss the memories and teachers he had there. Francine and Buster try to comfort him. Pilot episode. TBA

Season 1

Episode Name First aired Episode description Notes Episode number
All Grown Up August 31, 2020 Arthur and all of his friends (Francine, Buster, Muffy, Binky, The Brian, and others) finally have their first day at middle school, and find out they get their old teacher back at the school, Mr. Ratburn! First episode ever (excluding the pilot). 1
Restraining Order September 1, 2020 George gives Arthur a restraining order, which means if he goes within 16 feet of George in the school, Arthur will get "serious jail time". However, after George gets annoyed by Buster, he has a fight with Buster in the classroom. Arthur knows he can't violate the restraining order or he will go to jail, but he decides to get between George and Buster to stop the fighting because he doesn't want his two friends (George is Arthur's friend from Arthur's point of view) fighting. After he stops the fighting, George takes the restraining order paper out of Arthur's pocket, and Arthur's cries because he thinks he will go to jail. However, it turns out he is removing Arthur from the restraining order, and instead is adding Buster to it. 2
Brian's Double Trouble September 2, 2020 The Brian makes up a lie that his friends are the ones who mixed the milk with Apple Juice in the cafeteria, making his friends end their friendship with him. 3
The Money Loss September 3, 2020 After numerous negative reviews are sent to Muffy and her dad's company, Crosswire Motors, they lose their money and become poor. Due to this, Muffy and her dad open up a garage sale. 4
Gamed September 21, 2020 D.W. completely destroys the game cartridge of Arthur's favorite video game, The Adventures of Bionic Bunny on purpose. Arthur gets a new game cartridge, but he must keep it up high to prevent anyone from breaking it. 5
New Clothes September 22, 2020 After Arthur outgrows his clothes, his parents tell him to sell it. However, Arthur misses his clothes, so he sues it. One of the strings starts knocking things down in the house, giving Arthur more chores to do. 6
Act of Violence September 23, 2020 D.W. accidentally spills ketchup on the floor. Ms. Morgan then sees James with a red bruise on his knee, and D.W. standing next him. As a result, Ms. Morgan sends D.W. to timeout and she must prove her innocence. It is found out that the "blood" on the floor is actually the ketchup, and the red spot on Jame's knee is also the spot of ketchup from the floor. 7
Mayor Arthur September 24, 2020 Arthur is chosen to become the temporary new mayor of Elwood City after the other mayor suffers a broken leg and hand. Arthur can now do whatever he wants and has control over Elwood City. Although his time as temporary mayor expires, Arthur enjoys what he can still do as a preteen. However, Brain wonders what it would be like if he were temporary mayor. 8
Arthur's First Real Kiss October 16, 2020 Arthur has to prepare to get kissed by Francine in the public (in front of their classmates). Similar plot to the book Arthur's First Kiss, just with it being an actual kiss in this episode. 9
Sue Ellen’s Challenge April 5, 2021 Sue Ellen tries to beat a World Record by eating 100 scoops of chocolate ice cream with chocolate syrup on it. However, Sue Ellen ends up in the hospital when she eats her 80th scoop of the ice cream and gets her stomach pumped, due to too much food in her stomach. 10
Prunella The Pro April 9, 2021 Prunella tries to prove she is a pro by attempting to complete dangerous activities, so she can become popular in school, but her parents get concerned when they see bruises on Prunella after she completes the activities successfully. 11
The Cracked Glass April 12, 2021 Buster, who is required to do a 100 word essay, writes about a cracked glass cup that he saw in his kitchen. 12
Ladonna Moves Back In April 16, 2021 Ladonna moves back in to Elwood City, after her dad decided to drop out of military. 13
Kate’s First Pet April 30, 2021 Kate (also known as Baby Kate) buys her first pet fish, which is a baby female betta fish, but Kate starts to get bored of just watching the fish swimming around, so Kate tries to get rid of the fish, by trying to give it to one of her friends at preschool, trying to intentionally leave it at the school in a bag filled with water in hopes that someone will take it, to no avail. However, Kate decides to donate it to an Animal Shelter. 14
Fern’s Dancing Problem May 7, 2021 Lakewood Middle School is hosting a dance party, and all of her classmates dance with their girlfriends/boyfriends (Francine dancing with Arthur, Muffy dancing with Buster, and Sue Ellen dancing with Alan (also known as The Brain)). However, Fern broke up with Arthur when they were younger, and Francine And Arthur have started dating each other shortly after that, so Fern has no boyfriend to dance with. However, Fern realizes that she doesn’t need a boyfriend in order to dance and she eats cookies and drinks water during the party instead. Final episode of season 1. 15

Season 2

Episode Name First aired Episode description Notes Episode number
Arthur and Maria June 22, 2021 Arthur and the rest of the class are working on a project. Arthur and his girlfriend, Francine, will be working together on the project, but the next day Francine is absent from school because she and her family have to go to many places. In response, Mr. Ratburn Makes Arthur work with Maria on the project instead, and they quickly become friends. First episode of season 2. 16
Muffy Gets Grounded June 23, 2021 After Muffy yells and talks back to her father, Ed Crosswire, he grounds Muffy for 1 day. However, Muffy finds multiple ways to escape her room and bypass her punishment. 17
Arthur's 12th Birthday June 24, 2021 Arthur turns 12 years old in this episode. However, Arthur cannot think of what he wants for his birthday. This episode reveals that Francine (Arthur's girlfriend) is older than Arthur. 18


Special Name First aired Special description Notes Special number
The Summer Camp June 21, 2021 Arthur and the rest of the class are going to a camp for 1 day. First special. Special 1


Starting in March 2018, rumors have spread that Arthur could have another spin-off, but on a "different channel". Null officially announced on May 27, 2019 that they have received permission from PBS to make a second spin-off of the show titled Arthur: All Grown Up and ordered 15 episodes for the first season. Additionally, in the announcement, they stated that they started production on a pilot episode of the spin-off that was released on Null's YouTube channel on March 2, 2020 and was released on the Null App on August 15, 2020.

Null announced on August 16, 2020 that the show will premiere on August 31, 2020 at 5:00 PM EST on the original Null TV channel.

It premiered on August 31, 2020 at 5:00 PM EST on the regular Null channel.

On September 18, 2020, Null renewed the show for a second season that will contain 20 episodes, totaling 35 episodes. The season is expected to premiere in late 2021.