- Rintoo as Gumball
- Hoho as Darwin
- Lulu as Anais
- Kai-Lan as Penny
- Doraemon (From Doraemon) as Richard
- Nobi Tamako (From Doraemon) as Nicole
- Yeye as Penny Dad's
- Tolee as Banana Joe
- Geno (From Mario) as Tobias
- Rollpanna (From Anpanman) as Masami
- Mrs. Fowl (From Jimmy Neutron) as Mrs. Lucy
- Fowler (From Chicken Run) as Principal Brown
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