- Gru (from Despicable Me) as John Merrick
- Dave (from Alvin and the Chipmunks) as Frederick Treves
- Winnie as Madge Kendal
- Bomba (from Epic) as Mr. Carr-Gomm
- Dr. Rubin (from Alvin and the Chipmunks: The Squeakquel) as Mrs. Mothershead
- Kingston (from Theodore Tugboat) as Bytes
- The Lorax (from The Lorax) as Bytes' boy
- Eggs as The Night Poter
- Nim Galuu (from Epic) as Ann Treves
- Barry the Elephant (from Zookeeper) as Fox
- Marge Simpson (from The Simpsons) as Nora
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