Mueller (ミューラー Myūrā) is a boss character in Fire Emblem: Thracia 776. He appears on the 12th turn of Chapter 17A as part of an attempt to ambush the player's forces and prevent them from breaching the gates of Leonster castle. He is a subordinate officer, serving alongside Reinhardt as one of the toughest members of Freege's Gelben Ritter unit. He takes great pride in his position, and defends Reinhardt's name when one of Freege's soldiers questions Reinhardt's loyalty.