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 Man characters
The Maverick Hunters (Irregular Hunters in Japan) are a group of Reploids who protect humans and other Reploids from Mavericks and the heroes of the "Mega Man X" series, and the protagonists of each game are prominent Maverick Hunters. When they are introduced in "Mega Man X", they have already existed for quite a while, having been previously founded by Dr. Cain (who has since retired). From "Mega Man X" on, they battle Sigma and the other Mavericks.