Acting J. Marvin Campbell Biography J. Marvin Campbell is an actor. Acting Aliens, Clowns & Geeks Men in Black Agent 2021 Rumble Strip Rett 2019 Frank Embree 2017 Shiloh Falls Wyatt (as Marvin Campbell) 2007 Amanda & the Alien Guard 1998 Xtro 3: Watch the Skies Biber 1995 Ruby Bus Counter Tender 1992 Seedpeople Deputy Fraser 1992 Diplomatic Immunity Lt. Strathern 1991 Agent-readable