cast
- 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)
- Pat Fry Daddy (voice)
-
Jennifer Seguin
Mommy (voice)
- Merlee Shapiro Narrator (voice)
-
Pauline Little
Grandma (voice)
- George Morris Grandpa (voice)
-
Amanda Tilson
Sarah (voice)
-
Melissa Pirrera
Sarah (voice)
- Jesse Vinet Rosie (voice)
-
Rick Jones
Mr. Hinkle (voice)
- Brigid Tierney Clementine (voice) / Rosie / Clementine (voice)
-
Holly Gauthier-Frankel
Julie (voice)
-
Jonathan Koensgen
Leo (voice)
-
Stuart Stone
Billy (voice)
-
Ricky Mabe
Andre (voice)
- Annie Bovaird Caillou (voice)
- Jaclyn Linetsky Caillou (voice)
- Adam Mover Jason / Jeffrey (voice)
-
Graeme Jokic
Leo (voice)
-
Sofie Holland
Clementine (voice)
-
Camden Angelis
Jason / Jeffrey (voice)
- Bailey Stocker Andre (voice)
-
Sophie Léger
Sarah (voice)
- Luis de Cespedes Mr. Lajoie (voice)
-
Sophie Faucher
Narrator (voice)
-
Bryn McAuley
Caillou (voice)
-
Ajay Fry
Jim (voice)
-
Michael Caloz
Billy (voice)
- Ryan Tilson Leo (voice)
- Sophie Uretsky Clementine (voice)
