Damon Salvatore

 “Let me be clear about something. If it comes down to you and the witch again, I will gladly let Bonnie die. I will always choose you." - Damon to Elena.

Damon Salvatore is Stefan's elder brother. He was born in 1840 and lived in the colonial town of Mystic Falls with his brother Stefan and his father, Giuseppe Salvatore. He became a vampire in 1864. At the time of his return to Mystic Falls, Damon and Stefan hadn't seen each other in fifteen years due to their bitter, violent relationship. 

Damon is some sort of a bad guy. He looks bad, he's acting bad and make people getting pissed off of him but deep down in his heart, he's a very emotional guy and has a great sense of sympathy towards his dear one. He will do anything to save them. He's even more emotional than his brother Stefan and willing to fight and sacrifice himself for the sake of his love. Later, after Katherine, Damon and his brother Stefan both fall in love with Katherine's doppelganger, Elena Gilbert. 

Damon's sole purpose in coming back to Mystic Falls was to free Katherine Pierce, the vampire who turned him and the woman he deeply loved. After realizing that Katherine never loved him, his love for her fades as his friendship with Elena, Katherine's descendant and doppelganger, grows. Due to her impact on him and the strengthening relationship with his brother, they begin working together and protect Elena, her friends and family. He currently lives with his brother, ex-girlfriend Elena (when she isn't away at college), and her brother Jeremy Gilbert in the Salvatore Boarding House.