Stefan Salvatore is a fictional character from the television series The Vampire Diaries, which is based on the book series by L.J. Smith. He is portrayed as a vampire with a compassionate and caring nature, often struggling with his darker impulses. Stefan is known for his strong moral compass and desire to protect his loved ones, particularly Elena Gilbert. Stefan is the younger brother of Damon Salvatore, who has a more reckless and impulsive personality. Throughout the series, Stefan's character undergoes significant development, facing various challenges and conflicts that test his values and relationships. His journey explores themes of love, redemption, and the battle between good and evil.