Mega Man X

Mega Man X, nicknamed X, is a character that appears in the Mega Man comic series, and the Sonic the Hedgehog comic series and its spin-offs, published by Archie Comics. He is a Reploid from the year 21XX in an alternate reality, built by Dr. Light and created to possess the free will of a human being. Fearful of how such an experimental robot might react, Dr. Light sealed X in a capsule that would analyze his systems to ensure no malfunction, but knew he would not live to see it finished and had no one to take over his work. A century later, X was discovered by the archaeologist Dr. Cain, who copied X's design in order to create the Reploids. Unfortunately, some Reploids turned against humanity and became Mavericks, forcing other Reploids to fight them. X later joined the later faction to fulfill Dr. Light's dream of a peaceful coexistence between humans and robots as the leader of the Maverick Hunters.

Trivia

 * Mega Man X appeared in his self-titled game for the SNES, which would spawn multiple sequels.