Shikkoku no Kishi

漆黒の騎士, Black Knight, Jet-Black Knight, Dark Knight, Blackknight, Sinister General
The Black Knight is a boss character in both Fire Emblem: Path of Radiance and Fire Emblem: Radiant Dawn though he is also playable in the latter. He was Daeins most powerful general during The Mad Kings War and a member of Daeins Four Riders. Source: Fire Emblem Wikia