British boxer-turned-actor Maurice Bush (who was occasionally billed as Morris Bush) was a supporting player in a number of British films and television series from the 1950s to the 1990s. His filmography includes The Hellfire Club featuring Peter Cushing, crime drama The Frightened City starring a young Sean Connery (both 1961), Scars of Dracula (1970), alongside Christopher Lee and The Creeping Flesh (1973), alongside both Cushing and Lee. Bush also appeared in the bizarre musical comedy Son of Dracula (a.k.a. Count Downe) in 1974, directed by Freddie Francis, and starring legendary musician Harry Nilsson. This strange movie also features Ringo Starr as Merlin the magician. Bush's small role as the mute and child-like Frankenstein Monster is both charming and memorable. He also appeared in many popular British television series, including Dixon of Dock Green, Doctor Who (cast as an Ogron, an alien enemy of the Doctor) and Inspector Morse.
Dengar was intended to appear again in Star Wars: Episode VI Return of the Jedi (1983), as one of the background characters on Jabba the Hutt's sail barge, and his footage was filmed. However, save for a small appearance shortly after Luke Skywalker falls into the Rancor pit, Dengar was edited from the final movie. Dengar's face in Return of the Jedi is never clearly seen, and it was assumed by many that Bush did not play the role on this occasion until Jeremy Bulloch confirmed that it was Bush at Celebration Europe II's panel, "The Fett-Tastic Four."
It is also highly likely that Morris Bush was on the set of Star Wars: Episode IV A New Hope (1977), as Dave Prowse recounts that Morris Bush subbed for him as Darth Vader for the sequence immediately following the death of Obi-Wan Kenobi. (It was Morris Bush's foot we see kicking Kenobi's empty cloak).
Morris Bush died in 1999.