- Mr. Peabody - Gumball
- Sherman - Darwin
- Penny Peterson - Anais
- Mrs. Peterson - Nicole
- El Chupacabra (from Planes) - Richard
- Jewel (from Rio) - Penny
- Mr. Peterson - Mr. Robinson
- Franz Fliegenhozen (from Planes) - Principal Brown
- Chug (from Planes) - Banana Joe
- Audrey (from Regular Show) - Carrie
- Billy (from Thomas the Tank Engine) - Carmen
- Molly (from Thomas the Tank Engine) - Alan
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