So...possible theories. A. Scalpel was housed inside Ravage when he was killed by Bumblebee. Debunk: None.Soundwave did hold Ravage,Reedman,and Scalpel in his chest. B. He was on the destroyed Decepticon ship in Chicago. Debunk: Megatron clearly values Scalpel,he wouldn't place him on such a vulnerable ship. C. The Decepticons finally revolted due to Scrapmetal's misfortune. Debunk: They would have revolted when the order was first given.Besides,Scalpel is Megatron's top doctor.