**Severus Snape** is a tall, thin man with sallow skin, a large hooked nose, and shoulder-length greasy black hair that frames his cold, black eyes, often giving him the appearance of a menacing bat as his billowing black robes sweep dramatically behind him. His personality is equally striking: intensely intelligent and masterful in potions and the mind arts, yet deeply bitter, sarcastic, and cynical, with a sharp tongue that delivers cutting insults and favors only Slytherin students while bullying others, particularly Harry Potter. Beneath the stern, seemingly cruel exterior lies a complex, conflicted man driven by unwavering loyalty, profound regret, and a hidden capacity for bravery and self-sacrifice that few truly understand until the end.