Gate

Gate is the main villain from Megaman X6.

Story
Gate was a renowned researcher, who created various reploids to help people. However, some of his creations were misunderstood and forcefully deactivated, while others failed their purposes and ended with the same fate of the later. This deeply angered Gate, who grew a grudge against everyone, deciding to recluse himself to his research. After the Eurasia Incident, he investigates the area where the space colony crashed, discovering a small piece of scrap. After analyzing the thing, he discovers that it is actually a fragment from Zero, who had died in the Eurasia Incident. Amazed by his discovery, Gate researchs Zero DNA, managing to decrypt 99,99% of the DNA. Driven by madness, he decides to take revenge on the world that rejected him and his creations and create his perfect utopia for reploids only. By using Zero's DNA, he creates High Max and the Nightmare Phenomenon. He then starts his plan to retire all weak reploids, spreading the Nightmare and, with the help of fellow researcher Isoc, tricking all reploids to help investigate the areas affected by the Nightmare. He even reconstructs his old reploids, who take the role of Nightmare Investigators, to further his plans. X is then sent to the affected areas to investigate the entire situation, defeating the Nightmare Investigators and High Max. Gate the invites him to his secret lab, where he shows X the magnificence of his plan, but X only replies that he is crazy. X makes his way into the lab, destroying High Max and facing Gate, who infused himself with Zero's DNA. After a hard battle, X defeats Gate, who then shows his last resort plan: he had been creating a new body for Sigma, but it was still incomplete. Sigma, who was in a demented state because of the Eurasia Incident, kills Gate. After Sigma is defeated, Gate's body is taken by the Maverick Hunters and given to Alia, who was a friend of Gate and wishes to find a way of reviving her old friend.