A person with no ability to think for themselves; a sheeple (originally referring to opponents of former US President Donald Trump).
To act as an NPC (“non-player character”) in a game.
A student athlete who wants to try out for a college sports/athletic team without the benefit of a scholarship or having been recruited.
One who arrives and boards transport (such as a train or ferry) without having booked in advance.
An actor of a small (or "bit") part in a theatrical production or film, often without speaking lines.
Such a part in a play or film.