Ridley (Metroid)
One of Adam's final missions to Samus is to finish off Ridley, whom Adam fears might be more dangerous than the Metroids if left unchecked, and claims Samus is the only one capable of stopping him. However, Samus later discovers his corpse after he is killed, having had his energy drained by the Queen Metroid on the Bottle Ship. His mummified corpse turns up again in "Metroid Fusion" on the BSL station, after having apparently been removed from the Bottle Ship by the Galactic Federation and placed in a sub-zero storage room for further research (potentially into further bioweapon applications). It is later infected by an X Parasite, allowing it to gain the ability to transform into Ridley's likeness, known as . Samus later defeats the Ridley mimic and absorbs its Core-X, regaining her signature Screw Attack. What was left of the cloned Ridley's remains were destroyed along with the X when the BSL station crashed into SR388.
Marvel: Ultimate Alliance
"Marvel: Ultimate Alliance" features over 140 characters, and in addition the heroes battle evil versions of both themselves and other heroes throughout the game. Some heroes also appear as a villain under mind control, such as Jean Grey. In game each character has a set of four alternate costumes however three of these costumes must be unlocked. However, some of the characters costumes are also other superheroes in the Marvel Universe. This includes Iron Man as War Machine, Thor as Beta Ray Bill, Spider-Woman as Spider-Girl and Julia Carpenter from the Secret Wars, Ghost Rider as Phantom Rider and Ms. Marvel as Sharon Ventura. Also, there are various upgrades that can be attached to characters for boosts in power, speed, defense, etc. Nintendo characters Link from The Legend of Zelda and Samus Aran from Metroid were to appear in the Wii version of the game, but were cancelled due to being presented to Nintendo in the PS2 version.