Severus Snape

Severus Snape is Hogwarts' Potions professor and a covert double agent in Harry Potter.

Severus Snape's role in Harry Potter

A former Death Eater, he works for Dumbledore after Voldemort targets Lily Potter and spends years protecting Harry while maintaining a hostile public role.

Severus Snape's defining actions and relationships

Snape is brilliant, bitter, and often cruel, and his enduring love for Lily motivates courageous actions without erasing the harm he causes others.