Zazie Beetz
Dottie (voice)
Ken Jeong
Clarance (voice)
Jim Jefferies
Burnie (voice)
Catherine O'Hara
Alma (voice)
Reggie Watts
Hoss / Ernest Shackleton (voice)
Henry Winkler
Jepson (voice)
Alex Borstein
Mali (voice)
Benedict Wong
Dr. Chung (voice)
Julia Chan
Mrs. Sun / Little Girl (voice)
Tom Hollander
Charles Darwin (voice)
Richard Kind
Wally (voice)
Nick Frost
Captain (voice)
Maria Bamford
Bo's Mom (voice)
Raymond S. Persi
That Guy / Booby (voice)
David Silverman
Cyclops / Donut Store Clerk (voice)
Kelly Hu
News Reporter (voice)
Tom Kenny
Mozart / Sled Dogs (voice)
Jason Hightower
Narrator / Sled Dogs (voice)
Kevin Michael Richardson
Sled Dogs (voice)
Brenden P. Hill
Baseball Announcer (voice)
Wilhelm Boyens
Additional Voices
