extra(s)

An extra is the person who appears in a movie in a non-specific, non-speaking, unnoticed, or unrecognized character role, such as part of a crowd or background, e.g., a patron in a restaurant, a soldier on a battlefield; usually without any screen credit. Another term for extras is "atmosphere people." Extras are in contrast to "walk-on" and "non-speaking role," "bit players," or "principals. Also see "cast of thousands."