Washup, along with Boltoid and Nutta, is part of a trio of large machinery parts (washer, bolt, and nut) that lies scattered around Grunty Industries. While it appears harmless when inert, as with most objects just laying around the factory, it will spring up suddenly to attack any nearby bear and bird intruders. However, Washups are relatively weak and can be easily dispatched. They are the only enemies that don't make sounds when defeated. Weldar has the ability to spit out Washups, Boltoids, and Nuttas during the boss battle. When unleashed, these parts run straight at Banjo and Kazooie.