Zetsuborgs are bipedal and have a giant black lock with a red light glowing from the keyhole in front of it. Their actual bodies take on an appearance related to the victim's dream. Their base forms have dark red bodies. In episode 13, Zetsuborgs with red locks and a light purple eye were introduced. These are created after Twilight uses her Dress Up Key to unlock the lock the general has before they summon the Zetsuborg. When Lock powers himself up, he gains a new lock with red horns on it. Those have a glowing yellow eye and red horns as well. Shut also used one.