Additional characters included animal companions for each of the six Yowie and Balthizar the Bunyip, ruler of the Yowie Kingdom. To represent the threats facing the world’s natural habitats and threatened species, Pike created the Grumkin, careless creatures constantly seeking to destroy the harmony of the Yowie Kingdom. The Grumkins were: Munch (careless building, enemy of Rumble), Blob (pollution, enemy of Crag), Ooz (also pollution, enemy of Squish), Spark (careless firelighting, enemy of Nap), Slob (littering, enemy of Ditty) and Chomp the Tiger Toothed Tree Chomper (deforestation, enemy of Boof).