Louis C.K.

Max (voice)

Eric Stonestreet

Duke (voice)

Kevin Hart

Snowball (voice)

Jenny Slate

Gidget (voice)

Ellie Kemper

Katie (voice)

Albert Brooks

Tiberius (voice)

Lake Bell

Chloe (voice)

Dana Carvey

Pops (voice)

Hannibal Buress

Buddy (voice)

Bobby Moynihan

Mel (voice)

Chris Renaud

Norman (voice)

Steve Coogan

Ozone / Reginald (voice)

Michael Beattie

Tattoo (voice)

Sandra Echeverría

Maria (voice)

Jaime Camil

Fernando (voice)

Tara Strong

Additional Voices (voice)

Jason Marsden

Additional Voices (voice)

Mona Marshall

Additional Voices (voice)

Brian T. Delaney

Additional Voices (voice)

Bill Farmer

Additional Voices (voice)

Jan Rabson

Additional Voices (voice)

Ken Schretzmann

Additional Voices (voice)

John Kassir

Additional Voices (voice)

Danny Mann

Additional Voices (voice)

Jim Ward

Additional Voices (voice)

Bob Bergen

Additional Voices (voice)

Jim Cummings

Additional Voices (voice)

Jess Harnell

Additional Voices (voice)

Laraine Newman

Additional Voices (voice)

Dee Bradley Baker

Additional Voices (voice)

Philippe Lacheau

(voice) (uncredited)

François Damiens

(voice) (uncredited)

Willy Rovelli

(voice) (uncredited)

Florence Foresti

(voice) (uncredited)

Dorothée Pousséo

(voice) (uncredited)