Shockwave is apart of the Decepticons, but spends most of his time in has lab, tormenting his prisoners and conducting experiments on them. He also serves as Megatron's second in command, unlike in other continuties. He captured the great Grimlock, but, you know, that didn't last very long.
War For Cybertron[]
Shockwave was a downloadable character from a DCL character pack, allowing the player to play as him in Escalation and Multiplayer mode.