- Matt (from Cyberchase) as Mr. Happy
- Super Why (from Super Why) as Mr. Worry
- Ord (from Dragon Tales) as Mr. Bump
- Gordon (from Thomas and Friends) as Mr. Grumpy
- Thomas (from Thomas and Friends) as Mr. Tickle
- Elmo (from Sesame Street) as Mr. Small
- Toby (from Thomas and Friends) as Mr. Clever
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