Harry Lange was the production designer for The Dark Crystal. He was part of the team that created the overall look for the film's world, Thra. Around the same time, he worked with Jim Henson on his second Muppet feature, The Great Muppet Caper. Lange had studied art and design and began his career by working on spacecraft design with NASA. That led to work on 2001: A Space Odyssey and two Star Wars movies. Lange's other projects included Moonraker, Monty Python's The Meaning of Life, and Superman II.