Gray the Ninelives is the heavy hitter of the Gung-Ho-Guns, known for his raw destructive power. His body is a hybrid of metal and flesh armor that's surprisingly durable, and despite his bulk, he moves with unexpected agility.
Gray's design varies significantly depending on the adaptation. In the original anime, he's a humanoid cyborg packed with hidden weapons throughout his body—including his brain, which he keeps at his hips so his legs stay functional even if his upper half gets blown off. He doesn't really talk, just makes unsettling sounds and the occasional creepy laugh, particularly during his fight with Wolfwood.
The manga depicts him as a 7'5" muscular cyborg in a black leather or vinyl jumpsuit studded with metal bearings. His lipless mouth runs almost vertically with thin teeth, and his elongated head and neck can stretch in ways that recall a snake or worm. When he faces off against Wolfwood, he brings two massive gauntlets equipped with grenade launchers.
Trigun Stampede reimagines him as something closer to a full mecha—an enormous, heavy war machine that appears to be piloted from within rather than a true cyborg.
Content compiled by AnimeList.moe from publicly available sources.