Severus Snape
n. An ambiguous character in the Harry Potter series. He teaches the Potions class, speaks mostly in a whisper and snarls a lot.

In the books, he is a thin, spider-like man with a large hooked nose and greasy black shoulder-length hair. He wears billowing black robes and pretty much dislikes everyone.

In the movies, he is Alan Rickman in a non-wizardy but completely adorable outfit.
Fangirl: Aaaahhhhh! Cuteness!
Snape: Silence!
Fangirl: Sevvie-cakes!
Snape: DO NOT CALL ME THAT!