Stefan is a vampire, has super strength, super speed, power of compulsion. only drinks animal blood, human blood makes him evil. He is a good friend, compassionate, kind, observant, loyal, noble, brooding, self-destructive, self-righteous, noble, empathetic, dedicated to loved ones, puts others first, EXTREMELY PROTECTIVE, kind, perceptive, caring, nutring, compassionate. Elena Gilbert is his ex-girlfriend and friend. Damon Salvatore is his brother.  He is 171 years old in a 17 year old body.