Caillou (voice)
Mousseline / Clémentine (voice)
Doris (voice)
Boris / Rexy / Gilbert (voice)
Grandfather (voice)
Léo / André / Miss Martin / Jonathan / Sébastien (voice)
Nounours (voice)
Miss Martin (voice)
Caillou (voice)
Daddy (voice)
Mommy (voice)
Rosie (voice)
Narrator (voice)
Grandma (voice)
Grandpa (voice)
Clementine (voice)
Sarah (voice)