In the movie "Prince of Darkness," directed by John Carpenter, the term "Prince of Darkness" refers to a manifestation of evil, specifically embodied by a malevolent force represented as a swirling green liquid. This entity is believed to be a physical manifestation of Satan or a demonic presence that seeks to enter the world through a portal. The film explores themes of science, religion, and the struggle between good and evil, as a group of scientists and a priest confront this dark force.

In the movie "Prince of Darkness" (1987), Ozzy Osbourne is not actually a character but makes a cameo appearance as a homeless man. The title refers to the film's central theme, which involves an ancient evil entity that embodies darkness and seeks to invade the world. The phrase "Prince of Darkness" is often associated with Osbourne due to his persona as a rock musician, particularly in heavy metal, where themes of darkness and the occult are prevalent. His appearance adds a layer of cultural reference to the film.

"Prince of Darkness" is not a sequel to "The Thing," but both films are directed by John Carpenter, and they share thematic and stylistic similarities. "Prince of Darkness," released in 1987, is part of Carpenter's Apocalypse Trilogy, which also includes "The Thing" and "In the Mouth of Madness." While they are not directly connected in terms of storyline or characters, they explore similar concepts of fear, the unknown, and existential dread.

In the context of the movie "Prince of Darkness," the term "prince of darkness" refers to a powerful evil entity, often interpreted as a representation of Satan or a similar malevolent force. The film, directed by John Carpenter, explores themes of supernatural horror, with this entity embodying the struggle between good and evil. The title suggests the presence of darkness as a corrupting influence, and the story revolves around a group of scientists and clergy confronting this ancient evil, which is tied to a mysterious liquid that threatens humanity.