Chris Bachalo / Grant Morrison - New X-Men #143 pgs 2-3 Double Splash -- First / Birth appearance Weapon XV - Ultimaton

Inside the dome that houses artificial reality known as The World, Weapon XV stands at the top of page 3

"All of this is mine, he thinks. My home, my history… The World." Clad in a sealed environment suit, he watches over the city, with its people and machines going about their business.

NEW X-MEN #143, Ultimaton debuted as the next evolution in the Weapon Plus program. He was in many ways, the perfect killer. But his creators did perhaps too good of a job when making him. Ultimaton actually questioned his purpose when he was sent against Wolverine, Cyclops, and Fantomex. Ultimaton was subsequently destroyed in an explosion, but Fantomex rebuilt a version of him within the artificial space known as the World.