A Crest Weapon is, as its name implies, the crest of an Ultra used as a weapon. The most famous of these weapons is Ultraseven's Eye Slugger, which is a boomerang-like weapon that can be controlled by Ultraseven in flight. It serves as a head crest when not in use, and is the first of several detachable Crest Weapons used by later Ultras. The known Ultras who use Crest Weapons are: