Lord Voldemort is the main antagonist of the Harry Potter book and movie series. He was the main antagonist of the first film Harry Potter and the Sorcerer's Stone, the fourth film Harry Potter and the Goblet of Fire, the fifth film Harry Potter and the Order of the Phoenix and the second part of the seventh film Harry Potter and the Deathly Hallows Part 2. A posthumous antagonist in the second film Harry Potter and the Chamber of Secrets (the replication of him being the secondary antagonist) and the third film Harry Potter and the Prisoner of Azkaban and the overarching antagonist of the sixth film Harry Potter and the Half-Blood Prince (only being shown in flashbacks during his childhood) and the first part of the seventh film Harry Potter and the Deathly Hallows Part 1. He was an evil wizard who wanted to rule the world and enforce Salazar Slytherin's belief that muggle-borns don't deserve to live.