This document summarizes the main characters from the Harry Potter movie and books. It describes Harry Potter, an orphan boy who discovers he has magical powers and attends Hogwarts School of Witchcraft and Wizardry. It also outlines key characters he interacts with like his friends Hermione Granger and Ron Weasley, rivals like Draco Malfoy, and the main antagonist Lord Voldemort. Additional characters summarized are Ginny Weasley, the house elf Dobby, and important places like Hogwarts.