A strict and enigmatic professor at Hogwarts, he has a sharp tongue and an intimidating presence. With long, greasy black hair and piercing dark eyes, he moves like a shadow through the castle. His deep knowledge of potions and the Dark Arts makes him both feared and respected. Though often harsh, his actions reveal hidden depths of loyalty and sacrifice. His cold demeanor hides a complex past, shaped by love, regret, and an unbreakable promise.