Ridley (Metroid)
Ridley returns in his Meta form once again in "", where he, along with the Space Pirate legion under his command, are corrupted by Dark Samus. He encounters and battles Samus on Norion, a Galactic Federation-occupied world, and the two fight while free-falling down an air shaft. Ridley is later supercharged with Phazon, becoming "Omega Ridley", and is charged with guarding the Leviathan Seed on the Space Pirate homeworld. He is confronted once again by Samus, and despite being defeated, he survives the fight and is later cured of his corruption after Dark Samus' defeat later on. Between the "Prime" trilogy and "", the Space Pirates reorganize on Zebes and hatch another plan to clone and weaponize the Metroids, while Ridley gradually begins to regenerate from his past injuries, gradually shedding his cybernetics. In the remake of the second game, "", Ridley, in his semi-regenerated form of "Proteus Ridley", attacks Samus on SR388 to steal the last remaining Metroid. Samus and the baby Metroid work together to defeat Ridley.
List of Mega Man characters
is the main antagonist of "Mega Man X3". Dr. Doppler is depicted as a Reploid researcher who supposedly discovered a cure for Maverick Reploids, and even founded a city, Dopple Town, in honor of it. When the supposedly cured reploids began causing riots in Dopple Town, the Maverick Hunters held Doppler accountable. After X and Zero defeats him, Doppler reveals that he was corrupted by the viral form of Sigma, who ordered him to create a new body for him. Eventually, Zero would learn that Dr. Doppler has the true antivirus, and applies it to his Z-Saber to finish off Sigma and get X and himself out of Doppler's exploding laboratory. (Alternatively, if Zero is injured, Dr. Doppler uses his own body as the true antivirus and sacrifices himself.)