Tim Miller served as a member of the creature development team for The Dark Crystal. He worked on designing the environmental creatures that are seen throughout the film and he was one of the fabrication supervisors for the film's many creatures. He has also worked on numerous Henson television projects including The Muppet Show, Fraggle Rock, Bear in The Big Blue House, Animal Jam, and Jim Henson's Animal Show with Stinky and Jake. Starting with The Great Muppet Caper in 1980, Miller contributed to all subsequent Muppet feature films. Over two decades, Miller constructed or oversaw the creation of hundreds of Henson characters.