Hans Gruber is a fictional character and the main antagonist in the 1988 action film Die Hard. Portrayed by actor Alan Rickman, Gruber is a sophisticated and cunning thief who leads a group of terrorists in a heist at the Nakatomi Plaza in Los Angeles. His character is known for his intelligence, charm, and ruthless tactics. In the film, Gruber's plan involves taking hostages and stealing millions in bearer bonds. He faces off against the film's hero, John McClane, played by Bruce Willis. Gruber's character has become iconic in popular culture, often cited as one of the greatest movie villains.