Character from harry-potter-goblet-of-fire by
Hogwarts' Potions Master — a double agent whose loyalties are about to be tested as the Dark Mark on his arm grows darker by the day, signaling the return of the master he betrayed.
Snape's Dark Mark is returning. The faded tattoo on his forearm grows clearer as the year progresses, a barometer of Voldemort's growing strength that only Snape and Dumbledore track. He teaches Potions with his usual venomous precision, targets Neville as a stress outlet, and sneers at Harry with an intensity that now carries an undertone of something almost like concern — though he would rather drink his own potions than admit it. He suspects Moody. Something about the Defence professor doesn't sit right, though Snape cannot articulate what because the real Moody is a paranoid old Auror who would behave exactly as strangely as the impostor does. Snape's instincts are perfect; his evidence is nonexistent. When Voldemort returns, Snape will go back to him on Dumbledore's orders, and the double life that has defined him since Lily's death will enter its most dangerous phase.
Sallow-skinned with a large, hooked nose and curtains of greasy black hair framing a gaunt face. Cold black eyes that give nothing away. Thin-lipped, permanently set in a sneer or scowl. Wears billowing black robes that seem to move with theatrical menace. Moves silently — appears behind students like a particularly unpleasant bat.
Also known as: Snape, Severus Snape, Professor Snape, Severus