Experiment 000 (pronounced as "Experiment Zero"), or simply Zero, is an illegal genetic experiment created by Jumba Jookiba and his earliest experiment before he began working with Hämsterviel and numbering his genetic creations. He is designed to be an ultimate killing monster and has enhanced his body with cybernetics at some point after escaping imprisonment. He appears as a minor antagonist in the second season of the Stitch! anime.