
Grandpa Jacob is Jane Kangaroo's father and Junior Kangaroo's grandfather in The Wubbulous World of Dr. Seuss.
Counterparts[]
- Duke (Thomas the Tank Engine and Friends)
- Northumberland (Theodore Tugboat)
- Mushroom King (Super Mario Bros.)
- Clyde (Wacky Races/The Perils of Penelope Pitstop)