Caillou is an educational Canadian children's television series, based on the books by author Christine L'Heureux and illustrator Hélène Desputeaux. During the first season, many of the stories in the animated version began with a grandmother introducing the story to … Claudia-Laurie Corbeil, Violette Chauveau, Nathalie Coupal, Gilbert Lachance, Mario Desmarais, Johanne Garneau, Hugolin Chevrette Added on Amazon Prime 2023-02-10. Added on HBO 2022-06-06.