When Cam picks up the wrong kid to take off set, Save-Zilla is behind them, behind the prop buildings. When Cam realizes this, Save-Zilla is seen off to the left, without his head. Then, when Cam is returning the kid back to his place, Save-Zilla is back behind the prop buildings. With his head back on.
When Cameron goes to grab Lily off of the stage floor, in the long shot there is a woman holding Lily, while a little boy sits nearby. When the angle changes, the woman is no longer there, and Lily is sitting alone with the little boy.