Mark Henry Hentemann is an American screenwriter, creator and producer for television and film. He is a writer, executive producer and former 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", Opie, and Eddie the Ostrich. Hentemann is also a long-time real estate investor. Having moved to Los Angeles penniless in 1998, he began investing his script earnings into multifamily. He is founder of Quantum Capital, an investment firm.