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)

Maggie Lincoln

Gertie (voice)

Whoopi Goldberg

Cat (voice)

Ian McShane

Saiwa (voice)

Debi Derryberry

Additional voices (voice)

Skip Stellrecht

Additional voices (voice)

Hope Levy

Additional Voices (voice)

Terence Matthews II

Additional voices (voice)

Annabel Lew

Additional voices (voice)

Andrew Morgado

Additional voices (voice)

Jim Pirri

Additional voices (voice)

Jon Olson

Additional voices (voice)

Cat Ring

Additional voices (voice)

Fred Tatasciore

Additional voices (voice)

Michelle Ruff

Additional voices (voice)

Georgia Simon

Additional voices (voice)

Eric Tiede

Additional voices (voice)

Frank Todaro

Additional voices (voice)

Kelly Stables

Additional voices (voice)

Nora Twomey

Additional voices (voice)