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."
Irredeemable
The Plutonian, a powerful being once thought to be the world's greatest superhero, has now become its greatest supervillain. He has destroyed Sky City – the metropolis he once protected – and murdered millions of people across the globe. The series starts with the Plutonian killing his former ally, the Hornet, and his entire family. The remaining superheroes, the Paradigm – Bette Noir, Scylla, Cary, Volt, Qubit, Gil, and Kaidan – search for the reason behind Plutonian's change by speaking to his former sidekick Samsara, whom Plutonian lobotomized. Former enemies of Plutonian attempt to work with him but immediately betray him when he offers a way to earn his trust, resulting in a self-destruct of the facility in which they are meeting. The resulting explosion kills Scylla and injures Cary, superhero brothers who are observing the villains. The United Nations offer Plutonian their subservience, hoping to avoid his wrath. The Plutonian takes offense when, after speaking to the Singaporean representative, he realizes that the decision is made out of fear. In response, Plutonian sinks Singapore into the ocean. Meanwhile, Qubit searches for Modeus, the Plutonian's nemesis, using multiple robots designed to look and think like the villain.