Obi-Wan Kenobi from the Star Wars series - Everyone always credits Luke as being the hero, but I always found it to really be Obi-Wan. He was the one who fought without compromise to uphold good and resist Darth Vader after Anakin plunged into the 'dark side.' He was also the one who helped Luke begin his journey of becoming a Jedi, trained and instructed him with the teachings, and willingly sacrificed himself to Vader to help the others escape. I think his death was probably the inspiration that strengthened Luke's determination to then triumph against evil.