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Cast[]
- Arnold - J.D. Daniels
- Helga, Sheena (uncredited) - Francesca Marie Smith
- Gerald - Jamil Walker Smith
- Harold, Stinky (uncredited) - Justin Shenkarow
- Brainy and the man in the radio - Craig Barlett (uncredited)
- Grandpa Phil - Dan Castellaneta
- Grandma Gertie, Iggy (uncredited), Joseph (Joey) (uncredited) - Tress MacNeille
- Other Unnamed Boys - Kenny Ford, Jr. (Cameo)
- Singer- Gavin Cristopher