Galerians: Ash

An ultra-intelligent mother computer named Dorothy was given the responsibility of managing humans' lives. However, the computer's mind told her the humans must be destroyed as weak, imperfect beings, and a race of super-humans, the Galerians, must be created. Rion, the hero of the first game, destroyed Dorothy in a dramatic battle. Now Rion is brought back to life and learns that Dorothy was able to execute a destructive program before her death. (mobygames)