Revealing mistake: In the closeup of Twiki, you can see Felix Silva's mouth in the mouth grille.
Buck Rogers in the 25th Century (1979)
1 revealing mistake in Space Vampire
Starring: Mel Blanc, Erin Gray, Gil Gerard, Felix Silla
Return of the Fighting 69th - S1-E6
Revealing mistake: Before Roxanne Trent hits the box, it is possible to see that her hand is normal, not iron. (00:17:01)