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.
List of Mega Monster Battle characters
are an alien race that serves as the antagonist of "Ultra Galaxy Legend Gaiden". Debuting in episode 46 of "Ultra Seven", these aliens previously attempted in an invasion by using a mechanical knockoff of Ultra Seven before the real giant thwarted their plan. Stationing on Planet Chain, they created countless mechanical copies of the Ultra Brothers (save Taro and Mebius) in an attempt to invade the galaxy with the help of Darklops Zero, a prototype of Belial's Darklops army. Their first resistance appeared in the form of alternate reality versions of ZAP Spacy and the prime reality Ultraman Zero, before the prime reality Hyuuga and Rei appeared to assist them. Having stole the alternate Reimon's Battle Nizer, they used it in the creation of Mecha Gomora as an addition to their forces. However, Darklops Zero, whom was controlled and restrained by them, break free and rampaged, destroying their army as well as killing their leader, Herodia. was the antagonist faction that appeared in "Revenge of Belial". An invasion army formed by Ultraman Belial, now named as Kaiser Belial, the group's main base of operation is the .
 is the main antagonist of "Killer the Beatstar". Created by an unnamed alien race when the fearful Alien Bat had destroyed an entire universe, Beatstar's purpose was to control the planet-sized lifeboat, the to another universe but when his creators raged war with each others, he fully viewed organisms as evil creatures and resorted to build an army of robots in a plot to kill all lifeforms. His consist of reprogrammed/captured robot armies from past Ultra Series' antagonist, with the recent one being Jean-bot, whom was also used as the forerunner of his ultimate creation Jean-killer. However, the Ultimate Force Zero and ZAP Spacy destroyed his army, while Ultraman Zero and his defected creation, Jean-killer (renamed Jean-nine) destroyed him before he could destroy Planet Bram with his own sphere.