These small creatures walk on 2 legs and their tail is their tool. Cleaners use their tails to grab parasites out of other creatures. These parasites are eaten by the cleaner or moved to the anlag nest as food. Why cleaners do this, is their need for water, which they get from the anlag nest. The cleaners can go anywhere, because other rahi are only happy to get rid of insects. Cleaners don't have weapons, claws on feet are used only for hard grab for more difficult terrains like cave roof.