Claudia-Laurie Corbeilas Caillou (voice)Violette Chauveauas Mousseline / Clémentine (voice)Nathalie Coupalas Doris (voice)Gilbert Lachanceas Boris / Rexy / Gilbert (voice)Mario Desmaraisas Grandfather (voice)Johanne Garneauas Léo / André / Miss Martin / Jonathan / Sébastien (voice)Hugolin Chevretteas Nounours (voice)Ellen Davidas Miss Martin (voice)Annie Bovairdas Caillou (voice)Pat Fryas Daddy (voice)Jennifer Seguinas Mommy (voice)Jesse Vinetas Rosie (voice)Merlee Shapiroas Narrator (voice)Pauline Littleas Grandma (voice)George Morrisas Grandpa (voice)Amanda Tilsonas Sarah (voice)Graeme Jokicas Leo (voice)Sofie Hollandas Clementine (voice)Melissa Pirreraas Sarah (voice)Camden Angelisas Jason / Jeffrey (voice)Bailey Stockeras Andre (voice)
