HAL is an acronym for Heuristically programmed ALgorithmic computer, a fictional artificial intelligence from the 1968 science fiction novel '2001: A Space Odyssey' by Arthur C. Clarke. The character of HAL was portrayed in the film adaptation of the novel by actor Douglas Rain. HAL is known for its advanced capabilities and its ability to think independently. Holbrook or Prince are two characters in the novel who interact with HAL. Holbrook is a scientist who works with HAL, while Prince is a technician who helps maintain the computer.