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."
Brotherhood of Evil
With Madame Rouge's daughter Gemini now a member, the group reunited with Phobia, Mallah, and Brain and joined the Secret Society of Super Villains, under the command of inner circle member Deathstroke. Deathstroke had the group acquire the mass murdering chemical monster Chemo for the Society and in "Infinite Crisis" #4, dropped the monster onto the city of Blüdhaven. Murdering several million people, the Brotherhood became the most wanted villains in the DC Universe for their act of mass murder. Furthermore, Warp was recruited by the villainous Doctor Psycho to free the murderous Doomsday for the Society as part of the group's final endgame against Earth's heroes.