- Thomas as Gumball
- Percy as Darwin
- Emily as Mom
- Henry as Dad (seen on the picture)
- Lady as Anais (seen on the picture)
- Duke as Old Purple Man (cameo)
- Scruffey as the Dog
- Isobella as Penny's Sister (cameo)
- Murdoch as Penny's Dad (cameo)
- Derek as Larry
Thomas & Percy are sent to return the DVD: Alligators on the Train.
- The Amazing World of Gumall's country of origin is the UK (Great Britan).
- Darwin knows Cantonese.