This article is not part of the Harry Potter universe. This article covers a subject that is part of the real world, and thus should not be taken as a part of the Harry Potter universe. Brian F. Mulvey. Brian F. Mulvey is an Irish actor who portrayed the Watchman in Fantastic Beasts and Where to Find Them. External links Brian F. Mulvey at the Internet Movie Database Categories: Out of universe Fantastic Beasts and Where to Find Them actors Languages: Polski