Hal is WALL•E's pet cockroach in the movie WALL•E. Although he gets stepped on by WALL•E and shot by EVE, he suffers no harm.
- Although Hal is never referred to on-screen by name, he is named after producer Hal Roach. This also provides homage to 2001: A Space Odyssey’s HAL 9000.
- The chirps that Hal makes were created by speeding up sounds made by a raccoon.
- Hal and the Kremies he sleeps in references the myth that roaches and Twinkies (what inspired Kremies) are the only things that can survive the apocalypse.
- Hal is a reference to Woodstock from Peanuts.