Hero: The hero of this film is Harry. He is the loved, successful and morally straight Character that always saves the day.
Shadow(villain): Voldemort is the one out to destroy Harry and the muggle community. he creates an army to do it for him.
The mentor: Dumbledore is the one that protects Harry from danger. Its through the wise advice that Harry becomes the hero that he is.
The child: Neville Longbottom is the one that is unsuccessful in magic, but at the ends comes out successful.
Allies: the allies are Ron and Herminie who go on adventures with Harry to help protect and guide him, and to make sure he doesn't get himself killed.
Trickster: Dobby from Harry Potter is the trickster. He means well, but his efforts to help Harry do more harm than good. And every time he appears in person, his behaviour is ridiculous.
Threshold Guardian: Ollivander help Harry pick out the best wand. He tells Harry about Voldemort and that he might be the chosen one.
The Herald: Hagrid is the Herold, he gives Harry the letter of acceptance to Hogwarts. He also helps Harry with his school supplies.
The shape shifter: Professor Snape, when you first meet Snape he picks on Harry, he is the head of slytherin house. Makes Harry feel uncomfortable. but then shows his true intention when Harry tries to save him.