Little Wouter's New Friends - S1.E8

While fishing over the side of the ship, Little Bob catches two little critters called gubbies. He takes them as pets, but soon they begin causing havoc everywhere, eating all the food and gnawing at the wood. The innocent Blip is blamed, but eventually the real culprits are discovered. The Bobs turn themselves into giants using their special powers and scare away the gubbies.