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."
Shao Kahn
Shao Kahn and Darkseid are the key villains in the crossover game "Mortal Kombat vs. DC Universe", though both are playable characters. In the game's plot, a defeated Shao Kahn limps into a graveyard where he meets with his secret ally Quan Chi. They are confronted by Raiden, who uses a lightning bolt on Shao Kahn, which knocks him into Quan Chi’s portal. This event, along with a parallel one between Superman and Darkseid in the DC Universe, results in the creation of Dark Kahn, who serves as the main antagonist in the game. After Dark Kahn is defeated, Shao Kahn ends up in the DC Universe's Darkseid's throne room, where he discovers he has lost his powers. He is promptly imprisoned in the Phantom Zone. However, his powers came back in little time and was able to free himself but also everyone in the Phantom Zone, whom pledge allegiance to Shao Kahn.