Jacob Tremblay

Elmer Elevator (voice)

Gaten Matarazzo

Boris the Dragon (voice)

Golshifteh Farahani

Dela Elevator (voice)

Dianne Wiest

Iris the Rhinoceros (voice)

Rita Moreno

Mrs. McClaren (voice)

Chris O'Dowd

Kwan the Macaque (voice)

Judy Greer

Soda the Whale (voice)

Alan Cumming

Cornelius the Crocodile (voice)

Yara Shahidi

Callie (voice)

Jackie Earle Haley

Tamir the Tarsier (voice)

Mary Kay Place

Narrator (voice)

Leighton Meester

Sasha (voice)

Spence Moore II

George (voice)

Adam Brody

Bob (voice)

Charlyne Yi

Magda (voice)

Jack S. A. Smith

Eugene (voice)

Whoopi Goldberg

Cat (voice)

Ian McShane

Saiwa (voice)