Cast[]
- Arthur as Gumball
- Buster as Darwin
- D.W. as Anais
- Arthur's Dad as Richard
- Arthur's Mom as Nicole
- Francine as Penny
- Muffy as Masami
- Sue Ellen as Carrie
- Binky as Tobias
- Molly as Jamie
- George as Alan
- Ed Crosswire as Mr. Yoshida
- Mr. Haney as Principal Brown
- Mr. Ratburn as Mr. Robinson
- Rattles as Rob
- Tommy and Timmy Tibbles as The Eggheads
- Grandma Thora as Granny Jojo
- Grandpa Dave as Louie
- and more