The series presents several characters, who may be on the right side of the overall confrontation but are not necessarily good people, and James is one of them. In fact, in his younger days, he wasn't particularly nice at all, begging the question if the cruel bully deserves the title of hero. Yet despite the good deeds that the series focuses on, James wasn't a perfect person. Harry undoubtedly looks up to the man, idealizing him as a son is expected to do. With only appearing in a few scenes and most of the story told through the eyes of his son, it's hard to get a clear picture of James.
Through his association with Harry and many other notable characters, James becomes a significant part of the series despite only briefly appearing himself. James is one of the Marauders, a member of the original Order of the Phoenix, a secret animagus, best friend to Sirius Black ( Gary Oldman) and Remus Lupin ( David Thewlis), and most importantly, the deceased father of Harry ( Daniel Radcliffe). Throughout the series, we learn many things about him.
Though he is dead before the story really begins, James is referenced a lot.
