George o Curioso

Will Ferrell

as Ted (Man with the Yellow Hat) (voice)

Drew Barrymore

as Maggie (voice)

David Cross

as Junior (voice)

Eugene Levy

as Clovis (voice)

Joan Plowright

as Ms. Plushbottom (voice)

Dick Van Dyke

as Mr. Bloomsberry (voice)

Frank Welker

as George (voice)

Ed O'Ross

as Ivan (voice)

Michael Chinyamurindi

as Edu (voice)

Michael Sorich

as "Seen It" Cab Driver (voice)

Billy West

as Manager (voice)

Jeff Bennett

as Salesman (voice)

Kath Soucie

as Animal Control Receptionist (voice)

Clint Howard

as Balloon Man (voice)

Shane Baumel

as Kid (voice)

Timyra-Joi Beatty

as Kid (voice)

Christopher Chen

as Kid (voice)

Jessie Flower

as Kid (voice)

Alexander Gould

as Kid (voice)

Terrence Hardy Jr.

as Kid (voice)

Hailey Noelle Johnson

as Kid (voice)

Kelsey Lansdowne

as Kid (voice)

Ariel Winter

as Kid (voice)

Kimberly Brooks

as Additional Voices (voice)

Wendy Cutler

as Additional Voices (voice)

Joey D'Auria

as Additional Voices (voice)

Richard Epcar

as Additional Voices (voice)

Treva Etienne

as Additional Voices (voice)

Eddie Frierson

as Additional Voices (voice)

Donald Fullilove

as Additional Voices (voice)

Philip Maurice Hayes

as Additional Voices (voice)

Bridget Hoffman

as Additional Voices (voice)

Rif Hutton

as Additional Voices (voice)

Steve Kehela

as Additional Voices (voice)

Grier King

as Additional Voices (voice)

Donna Lynn Leavy

as Additional Voices (voice)

Nadia Lewis

as Additional Voice (voice)

John Mariano

as Additional Voices (voice)

Caitlin McKenna

as Additional Voices (voice)

Kerry Michele

as Additional Voice (voice)

Juan Pope

as Additional Voices (voice)

Jonny Solomon

as Additional Voices (voice)

Mandy Fabian

as Additional Voices (voice)

Fred Tatasciore

as Additional Voices (voice)