Crystal Boy (sometimes called Crystal Bowie) is one of the two main antagonists of the tongue in cheek Sci-Fi Anime and Manga Space Adventure Cobra by Buichi Terasawa. The other main antagonist is Lord Salamander. He appears in all adaptations of the manga, from the anime tv series, the animated movie, the video games and the OVAs.
Cobra's archenemy, Crystal Boy is a humanoid cyborg with a golden skeleton, and a body made from indestructible glass. He works for the mysterious Pirate Guild led by the even more mysterious Lord Salamander. Crystal Boy's signature weapon is a claw he can attach to his right hand. It can crush anything, and he also uses it for slitting his victims' throats. The claw has a built-in laser gun, and can be used as a grappling hook, or fired as a projectile.
His crystal body allows him to redirect any beam weapon he's hit with so that it passes harmlessly through him. Even the Psychogun's. Cobra has gotten around this by making his lasers be reflected inside Crystal Boy until they cause damage to his body or overheat him. Cobra eventually manages to defeat him with a rocket punch.
Despite his robotic body, Crystal Boy can still enjoy good food and fine wine, which are the only things he has left from when he was still human.