Ku-Embra

Ku-Embra is one of two unique enemies comprising a boss encounter in Golden Sun: Dark Dawn. He is one of Kaocho's two generals leading the invasion of Ayuthay, and will let you into the kingdom when you present Wo's Letter to them. His counterpart is his brother, Ku-Tsung, and they will both fight you when you attempt to leave Ayuthay once Amiti has joined your party.

Late in the game, if Ayuthay is visited after the Grave Eclipse, both of the generals' corpses will be seen near the entrance, having been slain by the shadow monsters spawned by the eclipse.