Mike Berlyn was an actor before the Great War.
Mike Berlyn was supposed to star with Vera Keyes and Vince Natali in the unreleased, pre-war movie Love Sets Sail!.
Mike Berlyn is mentioned only in the Fallout: New Vegas add-on Dead Money.
Love Sets Sail! movie poster
Mike Berlyn is a direct reference to Mike Berlyn, a developer on Infocom’s Suspended: A Cryogenic Nightmare, a game that influenced Dead Money.