Still humming happily as he worked his way down the impressive back struts, Orion didn't think on the motion immediately; it wasn't yet an ingrained thought process, to think of motion as wrong, but it still pinged him as off.

Then Orion froze, vents hissing.

"Megatron."

He pulled away from his work on Megatron's back, stiff and glaring at the spot where the gladiator's hands should have been.

"I don't recall telling you to move."