Marc Seal was an episode writer for Thomas and Friends. He was the head writer for "Bob the Builder" and "Mike the Knight". He is currently head writer for the Disney Junior series "PJ Masks".
He has also written episodes for "Waybuloo", "The Hoobs", "Guess with Jess", "Engie Benjy", "Mopatop's Shop", "Bob the Builder" and "Little Princess".
- Calling All Engines! (additional material)
- He, Laura Beaumont, Paul Larson, Helen Farrall, Lee Pressman, Simon Nicholson, Sharon Miller, Sam Barlow, Ross Hastings, Polly Churchill, James Mason, Rob Rackstraw, Rupert Degas, David Menkin, Lucy Montgomery, Gadi Levy, Dan Shatzberg, Holger Potzern, Simona Pahl, Steven Elford, Achim Schülke, Tobias Diakow, Jens Wendland, Marjolein Algera, Ernesto Lezama, Øyvind Borgemoen Lyse, Fabian Harloff, Dave Ingham, José Gilberto Vilchis, Nigel Chilvers, Lenora Hume, Miranda Larson, Stan Limburg, Lutz Harder, Francisco Colmenero, Steven Kynman, Knud Riepen, Eberhard Haar, Robert Kotulla, Ricardo Silva, Louise Kramskoy, Erik Schäffler, Douglas Welbat, Carlos Enrique Bonilla, Katja Brügger, Christian Rudolf, Jürgen Holdorf, Holger Mahlich, Robert Missler and TUGS voice actor Ian James Corlett have all worked on "Bob the Builder".
- He, Simon Nicholson and Allan Plenderleith all work on "PJ Masks".