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.
One who plays a leading or substantial role as a supporter, proponent, etc. representing a group, cause, or point of view.
A person in a play or movie with a minimal part; an extra.
One who serves in a subordinate or menial role.