Stefan Salvatore

Stefan is tall, lean and handsome with short, brown hair and green eyes. He appears quite serious and often sad, though has a very engaging smile. He has a tattoo of a rose on his right shoulder. Season 1
Stefan appears to be sombre and a little distant towards most people, though generally polite. He is in control of his emotions most of the time. His brother, Damon, is able to stir him to rage quite easily, and Elena Gilbert seems to be able to evoke a more passionate side to him.
After he is tortured by the tomb vampires in the episode 'Let the Right One In', he is rapidly weakened and Elena feeds him her blood but it brings out the predator side of him, which he hasn't revealed in over a century. Damon and Elena work together to help him get back on animal blood and it eventually works, seeing him return to his normal self.
Season 2
In 'The Return', he still shows his caring side about but also unleashes a nasty side when he confronts John at the hospital and threatens him to leave Mystic Falls. After Caroline has become a vampire and killed Carter in 'Brave New World', Stefan comforts her and says he'll help her adjust to her new lifestyle and in 'Bad Moon Rising' they go hunting together after Bonnie bespells a daylight ring for her. Stefan was born in 1847 and originally came from Mystic Falls, Virginia. It seems he has not visited since 1953. Brother, Damon Salvatore. Has some kind of family tie to Zach Salvatore, likely he is a descendent of the brothers.
Stefan has mentioned that Salvatores were of Italian extraction. They were among the original settlers of Mystic Falls, Virginia


--> Relationships



Elena Gilbert
Elena is the spitting image of his old, lost love, Katherine.[12] Stefan returned to Mystic Falls after learning about Elena's existence in order to get to know her. In 'Bloodlines' he finally confesses that he loves her, after revealing that she was adopted and nothing like Katherine and he was the one responsible for saving her from the car crash that killed her parents.

Damon Salvatore
Stefan has a very complicated relationship with his brother. There is an implication that the pair of them got along well in the past, but it seems that something - possibly Katherine - came between the pair. Stefan seems not to like Damon, while Damon in turn promised Stefan an 'eternity of misery'.[13] However, Damon also seems determined to bring out Stefan's darker side, possibly in an attempt to get his brother back.[14]
In the episode 'Blood Brothers' after Stefan has become a vampire he brings a young woman to his weakening brother and urges him to drink from her so he will survive. After initially refusing to do so he gives in and drinks from her, which completes his transformation. Later on, Damon reveals that he wished Stefan had died as he wanted Katherine all to himself. In spite of the bad blood between the brothers, it is likely that they still love one another.

Katherine Pierce
In 1864, Stefan's family took in Katherine, a war orphan from Atlanta.[15] Finding Katherine beautiful and her festive personality engaging, Stefan quickly becomes enamoured with her, escorting her to the Founder's Day Celebration.[16] Stefan and Elena begin to have sexual relationship. Initially, Stefan does not realize that Katherine is a secret vampire who is also having sex with his elder brother Damon.[17] Katherine uses her mind compulsion to keep Stefan acting normally. Stefan believes that his father will support his love of Katherine and tries to convince him to spare Katherine from the townspeople's plan to capture and burn all the vampires, although Stefan does not specifically identify Katherine by name. Stefan's father correctly deduces that Stefan is talking about Katherine and spikes his drink with vervain to protect him. Later on when Stefan and Katherine are having sexual intercourse, Katherine is poisoned by drinking Stefan's vervain fulled blood. Weaken, Stefan's father captures Katherine and Damon still blames Stefan for her capture, which Stefan also feels guilty about.[18] Stefan tells Damon that after many years of reflection, he realizes that he never truly loved Katherine and it was only her mind compelling that made him believe he did.[19] Stefan keeps a photograph taken of Katherine in 1864, which lead to some trouble when Elena Gilbert discovered it.[20] Paul Wesley described Stefan and Katherine's relationship as follow:
He realizes after meeting Elena that he never loved Katherine... It’s kind of like being in a relationship, you think you’re completely in love, you’re infatuated, and then you meet another person and you go, “Oh my God, what was I thinking?” And it’s kind of like that but a little different because that person also gave me eternal life. His obsession with Katherine was something that was finally broken by this human. And not for a 160 years, no one could break this obsession. And that’s why he would die and breathe for Elena for the rest of his life. For the rest of her life, I should say.[21]

Matt Donovan
Matt is initially distrustful of Stefan, likely due to the fact that Elena is obviously interested in him, but is gentleman enough to introduce himself to Stefan rather than ignoring him. However, once Vicki is attacked, Matt's suspicious gaze goes straight to Stefan.[22] Matt is still suspicious enough about Stefan that he follows him when he spots him in the hospital while he's visiting Vicki, and is perturbed when Stefan vanishes completely. Stefan is also the first person Matt appears to seek out when Vicki goes missing from the Mystic Grill, and is openly suspicious. However, when he learns that Stefan is the one who returned Vicki safely he is genuinely grateful to him.[23] He admits to Elena that Stefan might actually be a nice guy while playing pool with her,[24] and seems to have gained enough trust in him to follow his orders regarding Vicki when he's at a loss to help her during her (unknown to him) transformation into a vampire.[25] In 'There Goes the Neighborhood', he tells Stefan that he's glad that Elena is happy with him.

Vicki Donovan
Stefan takes it upon himself to try and teach Vicki to live as he does on the blood of animals and not to feed on humans. He's patient and sympathetic with her, but even his patience is worn thin as she continues to ignore his advice and give in to her passions, putting the lives of many people at risk. Stefan is forced to stake her to save the lives of Elena and Jeremy Gilbert.[26]

Lexi
Lexi is a 350 year old vampire and is Stefan's oldest friend. He is shown to be very close to her as he is able to relax and joke more often around her.