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."
Characters in the Metroid series
is a gigantic dinosaur-like beast and a member of the Space Pirate's High Command. His most prominent feature is his grotesquely oversized belly. First appearing in the original "Metroid", he is the first part of the mini-boss duo along with Ridley. In "Super Metroid" he appears in his giant form, two screens tall and almost a screen wide. "Metroid: Zero Mission" retconned his size and appearance, showing he did not grow between games. He was also slated to appear in "Metroid Prime" as a boss in the Phazon Mines, with a metal dome covering his head and blue Phazon veins on his belly, but was removed due to time constraints. Kraid also makes an appearance in the background of the Brinstar Depths stage in "Super Smash Bros. Melee" and "Super Smash Bros. Ultimate" where he periodically slashes and rotates the stage.