Mark "Thurop" Van Orman (born April 26, 1976 in Norfolk, Virginia, USA) is an American TV writer, director, producer, animator, storyboard artist, storyboard director, singer and voice actor. He is known for being the creator of the animated series The Marvelous Misadventures of Flapjack, in which he voices the titular character. He studied character animation at the California Institute of the Arts. He was the storyboard artist for Camp Lazlo, The Powerpuff Girls, and The Grim Adventures of Billy and Mandy. He was also the co-writer for these shows. He is also the co-executive producer for Adventure Time with Finn and Jake.
- The Powerpuff Girls-Storyboard Artist
- The Grim Adventures of Billy and Mandy-Writer, Storyboard Artist
- Camp Lazlo-Writer, Storyboard Artist, Storyboard Director
- The Marvelous Misadventures of Flapjack-Creator, Writer, Director, Executive Producer
- Adventure Time with Finn and Jake-Co-Executive Producer
- The Marvelous Misadventures of Flapjack-Flapjack, Background Singer, Additional Voices