Shockwave is a high-ranking member of the High Guard and one of Starscream's top lieutenants. He holds strong opinions about the structure of the High Guard, and is more than ready to act upon them... even though select applications of violence tend to be effective in persuading him to think otherwise.

However, after the Decepticons were created, he experimented on himself and completely removed all of his emotions to serve only logic, making him much more menacing and frightening for not just the Autobots but his fellow Decepticons as well. He's willing to ignore petty squabbles and jabs at him, and will only do what he finds logical. Megatron is pleased by his dedication and his competence stemming from it, starkly contrasting with the egotistical and gloating Starscream. His passive nature to goings-on around him may paint him as apathetic, but whoever believes that is writing their death warrant. Shockwave is as brutal and fierce as any Decepticon warrior, and has the strength and durability to withstand everything from explosions to Autobot assault. He does not take well to attempts on his life or his experiments failing or being tampered with.

For this role, you will need to refer to how he is portrayed in the Skybound comics as well as Corey Burton's performances from both G1 and Animated. You may also add a tinge of Steve Blum's portrayal of the character from Fall of Cybertron or David Sobolov's performance in Prime.