Based on the children's books by Hélène Desputeaux, Caillou tells us about a four-year-old boy named Caillou who is fascinated by the world around him. The boy in our fanart Caillou cursor pack has nicknamed himself The Prince of Imagination. Caillou has many adventures with his family and friends and uses his imagination in every episode. This character is an imaginative boy who likes to form transportive machineries such as rocket ships and airplanes.