An experienced puppeteer with many credits on TV commercials and series, he is mainly remembered for his puppets in Little Shop of Horrors, Labyrinth, The NeverEnding Story III, Muppet Treasure Island, and Lost in Space.
He also appeared as a Human actor in Diabolical Properties and New Adventures of Pinocchio, but returned to puppet work in 1999 for both George Orwell's Animal Farm and George Lucas' Star Wars: Episode I The Phantom Menace, where he puppets Jedi Master Yaddle. Yaddle does not appear in any further movie, nor was Eason called again to play a different character.
Since then, Eason was voice actor and puppeteer for the two first Harry Potter movies (Harry Potter and the Sorcerer's Stone, 2001; and Harry Potter and the Chamber of Secrets, 2002), and for The Hitchhiker's Guide to the Galaxy.