Mike Ploog was a sketch artist for The Dark Crystal. With Jim Henson, he worked on the films The Great Muppet Caper, Labyrinth, Dreamchild, and The Witches as a storyboard artist. He was a part of Henson's television series, The Storyteller, and the non-Henson series, The Tick. He was also a sketch artist on Frank Oz's film Little Shop of Horrors and with several Henson alums, Return to Oz. Ploog has also worked in the world of comic books, providing art for The Planet of the Apes series and creating Ghost Rider, both for Marvel.