A Night Guard mostly known as a Security Guard is an occupation where a person is paid to protect or watch over something/someone.

In the film's case, the museums are looked after Night Guards, people who stay over night at a museum to make sure that nobody steals or vandalises Museum property. Working as a Night Guard at the Museum of Natural History in New York is tough work as they have to look after exhibits which come to life every night at sundown.

Known Night Guards