Heartless

Heartless is an mysterious figure and leader of a group know as Zero Hearts. He has made many appearances throughout time. Not much is known about who or what he is,same said of his goals. He is the original inventor of the Zero link. But serves as Xs true antagonist and the one who gave him his powers through the Zero link.

Powers and abilities  
 * Genius Intellect: extremely intelligent and  possesses supernatural knowledge across time. Has deep understanding of multiple fields of science,technology, and multiple disciplines. Can speed read,photographic memeory, and a mimic ability. Expert in psycologhy, Enyclopedic knowledge,highly logical reasoning.  
 * Master strategist & tactician: Heartless is a master strategist and great tectician and can planed out all his moves and when he things don't go as planed (which they hardly do) he can can seamlessly adjust to any givin combat situation. On the spot he can read and understand the strength,weakness and mannerisms of his enemies and carries out strategies to achieve victory.