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John Carpenter brought real "homeless folks" into the production for several scenes and smaller characters and gave them food as well as paychecks. "I thought that was a pretty classy thing to do," said Roddy Piper.

The alien at the magazine stand gets his change twice.

The screenplay writer for "They Live" which is credited to "Frank Armitage", does not exist. John Carpenter used many pseudonyms when giving credit to his works in films. With his vast amount of work that he did himself, (directing, producing, writing and composing the musical scores), he did not want to appear to be braggadocios and vain by having his name appear over and over in the credits of his movies.

Edited into The Arrivals (2008)