Omega is a massive Reploid created during the four years of the Elf Wars. He is Dr. Weil's greatest creation and was made to be the perfect ruler, namely by storing and utilizing the Dark Elf in order to mass-control Reploids remotely, thus preventing them from becoming Mavericks. Although seeming only to be a servant of Weil, this is proven false by Weil himself at the end of the game revealing him to be a god. He plays a major role in Mega Man Zero 3 as one of the two main antagonists, alongside Weil himself, and also appears as a secret boss in Mega Man ZX.