Mark Fergus and Hawk Ostby

Mark Fergus and Hawk Ostby are screenwriters best known for their work on "Children of Men" (for which they were nominated for the Academy Award for Best Adapted Screenplay) and "Iron Man". Their other work includes "First Snow", which was also directed by Fergus, and "Cowboys & Aliens".
They are the creators and executive producers of the TV series "The Expanse", which debuted on Syfy in December 2015.