Devil's Due G.I. Joe vs Transformers continuity
When Teletran 3 went out of control and started zapping random Transformers into different points in Earth's timeline, the Stunticons found themselves laying dormant in mid-1930's Chicago... except Breakdown, who kept his consciousness and waited for the joint G.I. Joe and Cobra forces sent to retrieve the lost Decepticons. While Motormaster was missing, Breakdown woke three of his comrades and the Stunticons chased the humans and Optimus Prime across the city. Eventually they found Motormaster, and were promptly transported back to present-day Cybertron.
Some time later, the Stunticons were recruited by Serpent O.R., and helped him capture some pesky Autobots and G.I. Joes. Motormaster later attended a Decepticon gathering organized by their new leader, and attacked an Autobot peace ceremony in the form of Menasor. After the giant helped Piranacon and Predaking take down Omega Supreme, he brought Reflector to Optimus Prime. A short while later, Drag Strip was seen among the Decepticon forces preparing to defend their base from a combined Autobot/G.I. Joe assault, while Breakdown completely failed to guard some human prisoners. Motormaster helped defend Serpent O.R. from Optimus Prime's fury, but it didn't end well.