supernumerary
spear carrier
extra

In movies and television shows, no one worried about the spear carriers.

"He may be our spear carrier for the series."

Macenion was trying to get past the guard of the spear carrier.

"I thought my father's old spear carrier lived near Ennis."

A spear carrier is a character put in a story to be used like a piece of disposable tissue.

And Jimmy didn't see the policeman as a spear carrier.

Plenty of spear carriers, determined young men, but hardly anyone who stood out as an immediate leader.

With some exceptions, the human figure is largely a spear carrier in the show.

The viewer is placed in the middle of the action like some unseen spear carrier.

A spear carrier is a nickname for a minor acting part.