Cyber, A.K.A. Experiment 000, is an illegal genetic experiment that is the oldest creation by Jumba Jookiba. He's sort of Stitch's main antagonist in Stitch!. His one true place is in Galactic Prison.
Experiment 000 was originally a purple version of Stitch. He now turned into a black, cyborg experiment, part machine part alien. His form resembles a cross between some sort of lizard, and koala (and robot). He has a two cyborg arms, three spider-like legs, and half-helmet with a cyclonic-like right eye from some unknown incident. His cyborg arms serve many purposes such as cybernetic wiry rope, laser guns, a forked harpoon and welding tool, and his cyborg eye has zoom functions and improves his aim. In cyborg form, he is missing his nose.
In his original form, experiment 000 has all the powers of Stitch. In his cyborg form, he repairs android minions, spaceships and a doomsday device (super nova warhead).
He is the first experiment created before Dr. Jumba started assigning numbers to the other experiments. Jumba created this ultimate killer monster, but the result was over succeeded. He couldn't control experiment 000 until he finally suspended him and locked him away on an icy planet. Experiment 000 escaped and acquired mechanical body parts, which not even Stitch could stop him. He is an evil experiment that is a cyborg version of Stitch.