When Nobot reports to Graviton that all Earthlings are now under their control, the little robot is layered over Gravition's arm, making him seem to be even smaller in size. It then cuts to the view screen they are looking at, and when the shot returns to the two villains, Nobot is correctly layered behind Gravition.
When Gravition says "Prepare for your Doom" during his "lightsaber" duel with Spider-Woman, his right shoulder becomes see-through for a moment and only it's outline remain visible.