Cast[]
- Oaken (from Frozen) as Horton
- Gru (from Despicable Me) as The Mayor of Who-ville
- Anna (from Frozen) as Mrs. Quillingan
- Flint Lockwood (from Cloudy with a Chance of Meatballs) as Morton
- Winnie as Katie
- Lucy Wilde (from Despicable Me 2) as Sally
- Mother Gothel (from Tangled) as Kanga
- Archibald Snatcher as Vlad
- Elsa (from Frozen) as Helen
- Eggs as Jojo