As a four year old, caillou was given the horrifying diagnosis of terminal cancer. His chemo treatments left him with the difficult side effect of baldness. His parents, knowing his time was short, do everything they can to make his life as fulfilled as possible.

Caillou was originally first created in april 1989 by hélène desputeaux, who had drawn him for the first time at this time as she was pregnant with her daughter and son. Caillou was originally first created in april 1989 by hélène desputeaux, who had drawn him for the first time at this time as she was pregnant with her daughter and son.