suit, a German military helmet and a gas mask. The prop sculptor Brian Muir created the helmet and armour used in the film from McQuarrie's designs. While McQuarrie was working on visualisation work for Lucas, he was also commissioned by an executive of Ballantine Books, Judy-Lynn del Rey, to produce the cover art of the forthcoming novelization of Star Wars. The first edition of Star Wars: From the Adventures of Luke Skywalker went to press in 1976 featuring McQuarrie's version of Darth Vader's helmet on the cover. Like the film, the book was a runaway success, and McQuarrie began a long relationship with the publisher, producing the artwork for 22 further titles for Del Rey Books between 1978 and 1987. Star Trek Around the time that McQuarrie was completing his work on Star Wars, he was brought on board the design team for a planned cinematic production based on Gene Roddenberry's science fiction television series, Star Trek. Titled Star Trek: Planet of the Titans, the film was to feature a redesigned USS Enterprise starship, and McQuarrie was recruited to provide the visualizations. His triangular ship design has been likened to the appearance of the Star Destroyers featured in Star Wars. Star Trek: Planet of the Titans did not make it past the pre-production phase and the project was cancelled in 1977. The design was later used in 2017's Star Trek: Discovery as the basis of the titular ship. Star Wars sequels When Lucas began work on his sequel to Star Wars, The Empire Strikes Back (1980), McQuarrie was once again brought in to supply previsualization artwork. His sketches and production paintings established the appearance of some of the saga's most enduring elements, such as the gigantic AT-AT Walkers in the battle on the ice planet Hoth and the wizened elf creature Yoda. McQuarrie's design for Cloud City, a floating city in the clouds, actually originated from his early sketches for Star Wars from 1975, when he was illustrating a concept for the planet Alderaan, as described in Lucas' 1975 draft script, Adventures of the Starkiller as taken from the Journal of the Whills, Saga I: The Star Wars. McQuarrie made an uncredited cameo appearance in The Empire Strikes Back, when he appeared in the film's opening sequence in the Rebel base on Hoth as a character named General Pharl McQuarrie. In 2007, McQuarrie became part of the Star Wars action