A classic villain of the space epic 2001: A Space Odyssey, HAL 9000 is an intelligent computer onboard Discovery One. He controls and monitors all activities on the spaceship, but over time starts to malfunction, and by that, it essentially thinks for itself. At every turn, HAL fools the crew, making them believe he’s under their control when in fact its the opposite. Eventually, the crew tries to stop HAL, but he continues to disobey, uttering the famous words, “I’m sorry, Dave, I’m afraid I can’t do that.”