Ed Regis was the head of public relations for Jurassic Park. A very tenacious and abrasive man, Regis insisted that John Hammond's guests take the park tour despite the threat of a storm. On the tour, he acted as the group's guide. When the adult tyrannosaur escaped its paddock, Regis turned chicken and abandoned Tim and Lex Murphy in a wild panic. Later, he was eaten by the juvenile tyrannosaur after a vain attempt to scare it away.