Каю

Claudia-Laurie Corbeil

Caillou (voice)

Violette Chauveau

Mousseline / Clémentine (voice)

Nathalie Coupal

Doris (voice)

Gilbert Lachance

Boris / Rexy / Gilbert (voice)

Mario Desmarais

Grandfather (voice)

Johanne Garneau

Léo / André / Miss Martin / Jonathan / Sébastien (voice)

Hugolin Chevrette

Nounours (voice)

Ellen David

Miss Martin (voice)

Annie Bovaird

Caillou (voice)

Pat Fry

Daddy (voice)

Jennifer Seguin

Mommy (voice)

Jesse Vinet

Rosie (voice)

Merlee Shapiro

Narrator (voice)

Pauline Little

Grandma (voice)

George Morris

Grandpa (voice)

Amanda Tilson

Sarah (voice)