Boies

Boies is a member of the Black Fang and appears in Fire Emblem: Rekka no Ken, appearing as a subordinate of Ephidel while his superior was occupying Santaruz castle. After Ephidel kills the Marquess of Santaruz, Boies is left to guard the Castle and cover Ephidel's retreat, and is therefore the boss of Chapter 13: In Search of Truth. He is unique amoung bosses in that he tries to sneak up on your party at the beginning of the chapter in a cutscene, then retreats to guard the castle while challenging Hector to make it there alive.