Wheeljack is one of the premiere inventors and engineers of any Cybertronian age. Known for his innovation even among the Decepticons, Wheeljack had a dedicated laboratory reserved for him on the Kimia research satellite. Wheeljack is a consummate problem-solver, highly skilled at developing solutions to any situation he is presented with. He can also be a bit of a maverick, though—Wheeljack knows he's virtually indispensable to the Autobot cause, and this cockiness can lead him to ignore the chain-of-command in situations where he's sure he's right.

Before the Great Wars, Ratchet was a civilian mechanic, and one of the best on all of Cybertron. But war is hell, and Ratchet learned that all too well. It left him bitter and cynical. After the war, he got himself placed in a dead end position of repairing space bridges, seeing it as a chance to get away from what he had experienced. And in his experience, "hero" is another word for casualty, because that's what most of the heroes ended up being. Still, he knows one when he sees it, and Optimus Prime definitely is one. He enjoys grumbling about almost everything, being sarcastic, and having war flashbacks, just like any old man.