1138 is a number that appears in products that are related to George Lucas and his works. It is also a recurrent in-joke in subsequent George Lucas films and LucasArts computer games. The origin of this number is the title of Lucas's first movie THX 1138 and also the main character. Lucas likes to re-use words and numbers in his newest productions in honor of his older works. Many elements in Star Wars include 1138 in their names, and it is a frequent easter egg in Star Wars products.