The puppet segments are used only on the PBS telecasts of Caillou, in order to fill the show's time slot. While Caillou has slots for commercials, the English Teletoon shows ads during the breaks while PBS does not show paid advertising during the program. Some newer Caillou episodes do not include puppet segments.
Matthew Theodore Bear (Teddy Bear)
Matthew Theodore Bear (Teddy Bear) is an old teddy bear that once belonged to Caillou's dad. Now belonging to Caillou, Teddy is reasonable, cute and brown. He is somewhat pessimistic, but all in all, he just needs a hug.
Gilbert the Cat
Gilbert is Caillou's cat. He has a greyish-blue body with black stripes and loathes dogs with a passion. Gilbert especially hates the bulldog in the neighbourhood. In the puppet segments of Caillou TV series, Gilbert often composes odes.
Rexy is Caillou's toy dinosaur. Bluish in color and speaks in a somewhat Hispanic accent, he is very playful. Rexy has the incapability to give a "good" hug. Rexy is noted for being rather pedantic. His speech impediment has been the scourge of his existence; he is often teased about it, and tends to react violently to any mention of it.
Deedee is a brown squirrel, she has a bushy tail, and is often seen playing with Rexy. Deedee first apperared as a baby squirrel when Rexy found on the ground lost from her family. Deedee lives in Caillou's backyard were most of the puppet segments take place. Deedee is sometimes captioned as "Diedi". Deedee was absent in Caillou Season 3.
Caillou - Fan website for Caillou children’s TV show - Kayu