Crowd actors (6)
I believe the answer is:
extras
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">crowd actors</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for extras that I've seen before include "People employed in crowd scenes in film" , "Runs not scored from the bat" , "Film actors in small non-speaking roles like crowd scenes" , "Additions" , "Add-ons" .)