Grandpa is Caillou and Rosie's paternal grandfather, the husband of Grandma, the father of Boris, and his sister the father-in-law of Doris, Uncle Felix and Aunt Ana. He first appears in Caillou Hates Vegetables.
He often tells Caillou stories about his Daddy when he was little like Caillou. In Caillou's Hiding Place, he shows Caillou a fort hidden in a tree in the backyard that Daddy used to play in. In the episode Surprise Party, Caillou along with Grandma and Rosie plan a surprise birthday party for Grandpa after finding out he didn't have a birthday party.
In Season 4, he and Grandma would babysit Caillou and Rosie instead of Julie. He is usually seen wearing a blue sweater with a red collar, gray pants, and red shoes.
Appearances[]
Season 1[]
- Caillou Hates Vegetables
- Caillou's Hiding Place
- Caillou Goes Camping
- Caillou Makes a New Friend
- Caillou Grows Carrots
- The Caillou Show
Season 2[]
- Star Light, Star Bright
- Caillou In Space
- The Treasure Chest
- Under Sail
- Caillou's Top Bunk
- Recipe for Fun
- Pumpkin Patch Kid
- Do It Yourself
- Caillou's Thanksgiving
- Caillou Plays Baseball
- Caillou Cleans Up
- Caillou and the Tooth Fairy
- Surprise Party
- The New Leaf
Season 3[]
- Caillou's Canoe Trip
- Caillou Helps Grandpa
- Backyard Bowlers
- Dancing at Grandma's
- All Aboard
- Gone Fishing
- New Clothes
Season 4[]
- Where's Gilbert?
- Caillou's Building Adventure
- Caillou the Sailor
- A Present for Mommy
- Captain Caillou
- Caillou's First Wedding
- Grandpa's Friend
- Caillou Goes Caroling
- Caillou's Christmas Eve
- Caillou's Collection
Season 5[]
- Caillou's New Groove
- Caillou Goes Bowling
- Caillou's Dance Party
- Coach Grandpa
- Raspberry Ruckus
- Smooth Sailing
- Caillou's Fun Run
- Blueberry Point
- Soccer Trouble