Sealen is the boss of Chapter 15 in Hector mode of Fire Emblem: The Blazing Blade. He is a member of Eubans' mercenary band and was sent to take back Laus castle. He seems uneasy with Heath and thinks he is not a true mercenary. The chapter can be completed without killing him, however his fate afterwards is unknown. Also like many other bosses in the game, his portrait is reused in a different color pallete, in this case with Oleg.