A motion picture extra is a person who is hired to appear as part of the background of a film. These persons generally do not have a speaking role, and are seldom given screen credit. In return for a per diem payment, an extra must follow the same directions for as many takes as are necessary for a particular scene, until the film director is satisfied. When filming is done on location, rather than on a closed set, there is generally not a compensation for a person who is passing through while filming is done. As with Back to the Future, Back to the Future Part II had hundreds of extras on a variety of sets, including people dressed up in the fashions of 2015, motorcycle riders in 1985A, and a mostly new group of actors appearing in 1955 at a reshooting of the Enchantment Under the Sea Dan