Mega Man X

Mega Man X, commonly called "X", is the main protagonist of the Mega Man X series. X also serves as a guide during the Mega Man Zero series and appears as Model X in the Mega Man ZX series. He is the successor of the original Mega Man and is Dr. Thomas Light's greatest creation. Throughout the X series, X is a Maverick Hunter who fights alongside his partners Zero and Axl in order to maintain peace and stability in the world and protect humans and Reploids alike from Maverick Reploids, though X would like nothing better than the opportunity to stop fighting. Because of his aversion to violence, X is initially ranked a B-Class Hunter, but he is eventually promoted to S-Class.

X is the first robot to possess sophisticated technology and behavioral adaptation, based on the last design of Dr. Light. Dr. Cain, the scientist who found him, was never able to fully analyze X's internal systems and system code. Despite this, Cain was able to replicate X's general architecture, making X the precursor to each and every Reploid brought into production. This makes him the proverbial 'father' of the Reploids. Though X and Zero are technically not Reploids, as they are the first of their kind, they are known as Reploids to reduce confusion.