Fader Bull are harmless herbivorous bull-like Rahi that could teleport away from danger. It is unknown where these Rahi originally came from and how they came to Po-Metru. They are named because their teleportation leaves behind a ghostly image of themselves that slowly fades away (whenever they feel threatened) and also apparently have a natural power similar to a teleportation Kanoka Disk. Following the Battle of Bara Magna and the collapse of the Great Spirit Robot, the Fader Bulls later left the Matoran Universe to begin a new life on Spherus Magna.