Mark Hentemann (born April 24, 1969) is an American animation writer. He is the executive producer and showrunner of the animated series Family Guy, where he started as a writer in its first season. In addition, Hentemann has also provided voices for many minor characters on Family Guy, including the "Phony Guy" and Opie.Hentemann has also written for the Late Show with David Letterman. Hentemann is currently working with Family Guy creator Seth MacFarlane on the animated series, Bordertown.