Caillou is the main protagonist of the Evil Caillou Gets Grounded series, the tritagonist of the Rosie Gets Ungrounded series, and the main protagonist of the Caillou Gets Ungrounded series by Caillou Fanatic Est 2004. He is based on the TV show of the same name (Caillou)
Caillou is a 24-year-old young adult. He wears a yellow T-shirt, blue shorts, and red shoes. He looks like his 4-year-old boy counterpart in the original Caillou (even though he is in his twenties).
Role in ECGG: He likes to ground Evil Caillou a lot and maybe play the piano. He was once bald in a episode of Evil Caillou Gets Grounded.
Role in RGUG: He ungrounds Rosie with his parents
Role in CGUG: He is the one who will get ungrounded
If Caillou was 4 when the real series premiered on September 15, 1997, he was born on September 15, 1993 and is 24,
Caillou is a young adult who likes grounding evil caillou, or ungrounding Rosie, in some videos by Caillou Fanatic Est 2004, He plays the piano.