Rantz is also encountered during Recipe for Disaster, when players must run an errand for him in order to learn how to catch jubblies. Players will also have to do a "small favour" for Rantz during the One Small Favour quest.
Rantz will give players the ogre bow during the Big Chompy Bird Hunting quest and afterwards if should it lose it, he will sell you another.
If you lose your ogre bellows, walk north from Rantz until you get to a cave (NOTE: The cave is NOT on the world map) and go in. In the north-west area of the cave there should be something with a huge rock on top of it. Press unlock locked chest then search it for new ogre bellows.
Rantz is also used in various clues for treasure trails. You can reach him by using Fairy Ring code AKS or via the minigame teleport to Nightmare Zone.