Tumfoids were small two-legged robots that were often found near Gelatonium plants. They were built by the managers of these plants to prevent workers from bouncing on the Gelatonium cubes, as the Tumfoid would promptly feast upon said cubes and discourage their silliness. However, on some occasions, these machines soon become a nuisance, since they would begin feast upon all the Gelatonium, requiring Fossermites to scare them away.