Passage: Ridley Scott credits Edward Hopper's painting Nighthawks and the French science fiction comics magazine Métal Hurlant, to which the artist Jean "Moebius" Giraud contributed, as stylistic mood sources. He also drew on the landscape of "Hong Kong on a very bad day" and the industrial landscape of his one-time home in northeast England. The visual style of the movie is influenced by the work of futurist Italian architect Antonio Sant'Elia. Scott hired Syd Mead as his concept artist; like Scott, he was influenced by Métal Hurlant. Moebius was offered the opportunity to assist in the pre-production of Blade Runner, but he declined so that he could work on René Laloux's animated film Les Maîtres du temps – a decision that he later regretted. Production designer Lawrence G. Paull and art director David Snyder realized Scott's and Mead's sketches. Douglas Trumbull and Richard Yuricich supervised the special effects for the film, and Mark Stetson served as chief model maker.Blade Runner has numerous deep similarities to Fritz Lang's Metropolis, including a built-up urban environment, in which the wealthy literally live above the workers, dominated by a huge building – the Stadtkrone Tower in Metropolis and the Tyrell Building in Blade Runner. Special effects supervisor David Dryer used stills from Metropolis when lining up Blade Runner's miniature building shots.The extended end scene in the original theatrical release shows Rachael and Deckard traveling into daylight with pastoral aerial shots filmed by director Stanley Kubrick. Ridley Scott contacted Kubrick about using some of his surplus helicopter aerial photography from The Shining.

Question: Who was Scotts concept artist?
Syd Mead