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.
Metroid
"Metroid", "", "Super Metroid", "Metroid Fusion", and "" were all developed by Nintendo's internal R&D1 division. The games which have been developed by separate teams are "Metroid Prime", "", "" and "Prime 4" (Retro Studios), "Metroid Prime Hunters" (Nintendo Software Technology Corporation), "Metroid Prime Pinball" (Fuse Games), and "" (Project M). The central figures in the production and development of the "Metroid" series are Satoru Okada, who directed "Metroid" and created the series; Yoshio Sakamoto, who acted as a character designer for the first game and has directed or supervised the development of most of the subsequent games; Gunpei Yokoi, who headed the R&D1 division and produced the first two games; Makoto Kano, who wrote the scenario for "Metroid", co-designed the second game, and produced the third; and Hiroji Kiyotake, who designed characters for the original game. "Mario" and "The Legend of Zelda" creator Shigeru Miyamoto was involved with the "Prime" trilogy, having been the one that suggested Retro to work with the franchise.