Often considered one of the scariest villains in cinematic history, John Doe's true identity is unknown. This serial killer chose his victims according to the Seven Deadly Sins: Wrath, Envy, Greed, Pride, Lust, Sloth, and Gluttony. His murders were extremely gruesome and bloody, often involving torture, both physical and emotional. In the film Se7en, Doe committed the first five murders alone (Greed, Pride, Lust, Sloth, Gluttony), grabbing the attention of Detective David Mills (Brad Pitt). However, he used secrecy, suspense, and mystery for the final two sins, Wrath and Envy, bringing the film to a haunting and disturbing conclusion, often considered one of the biggest twists in history.