Buddy

Cristin Milioti Grace

Delaney Quinn Freddy

Topher Grace Ben

Keegan-Michael Key Buddy the Unicorn (voice)

Michael Shannon Willie (voice)

Patton Oswalt Strappy (voice)

Clint Howard George

Eric Bauza Mr. Mailbox / Worry Well / Couchy / Trashy / Pee Flower (voice)

Sergey Zhuravsky Buddy the Unicorn (suit)

Jonathan Yurco Dark Buddy (suit)

Devon Hawkes Ludlow Charlie the Train (voice)

Jimmica Collins Betty Bunny (voice)