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 II: Return of Samus
"Metroid II" is an action-adventure game in which the player controls the protagonist Samus Aran on the fictional planet SR388. In this side-scroller, players advance through the game by using Samus' weapons to kill a fixed number of Metroid creatures. The player is given a detector that displays the number of Metroids remaining in the area. Once all the creatures are eliminated, an earthquake occurs and the planet's lava levels decrease, allowing Samus to travel deeper through its tunnels. The Metroid creatures are encountered in different evolution stages of their development cycle: original, Alpha, Gamma, Zeta and Omega. The more developed the organism is, the stronger its attack. "Metroid II" features save modules located around the planet, which allow players to save their progress and continue in another session.