Knight

Knight is a general serving Greed. First appearing in Metroid EX chapter 7, he appears to be a human. He is tasked by Greed with defeating Samus Aran on the graveyard planet. When she arrives there, he slices in half a "zombie" (actually a robot) that had formed out of the un-Deadly Six Stars, believing that these "toys" would not defeat Samus successfully. Knight was then attacked by Joey, but rather than fight back Knight encouraged Joey to leave the area. Joey takes notice of a saddened look in his eyes. Knight then challenged Samus to a battle, where he is incredibly fast despite his massive build. Knight displays to Samus a "secret technique" of his, Guillotine Blast, which manages to get the best of her. Knight is last seen challenging Samus to continue fighting him.

Trivia

 * The names of Bishop and Knight refer to pieces in a game of chess.