Ridley (Metroid)
Ridley's status within the ranks of the Space Pirates is unclear, with some sources stating that he is the leader of the entire Space Pirate race, whereas others portray him as simply the Pirates' military commander or even a mere enforcer within the Pirate military ranks, subservient to Mother Brain or Space Pirate High Command. Regardless, he is consistently depicted as a ruthless and cunning tactician who never passes up an opportunity to bring his considerable ferocity to bear on the battlefield, opting to overwhelm his opponents with an unwavering onslaught of attacks from his mouth, claws, and tail. He is also incredibly cruel, actively taking pleasure in the killing and torment of others; at one point in the official manga he taunts Samus by claiming he may have devoured her mother's corpse after killing her, and a Space Pirate log entry in "Metroid Prime" notes that being the mainstay of the Pirate security force is "a job he will certainly relish."
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.