In the show
Where Boris was a child like his son Caillou, he has a hair on his head, he celebrate his birthday with his father and his mother.
He meets Doris, his childhood friend who he fell in love with her, he married Doris and they had two children named Caillou and Rosie.
When his wife went to the hospital with him, he puts his mother Grandma in charge of his son Caillou. Then Boris shows Caillou that is not easy to be a big brother, he then switches his newborn daughter's diaper to make her smell good, then Caillou puts his sister in his arms for the first time with the help from mommy.
He and his wife adopt Gilbert in a refuge for pets where Gilbert was a kitten.