Wheeljack

"The Wreckers scattered a long time ago and alone is usually a lot less complicated."

- Wheeljack to Optimus Prime in Loose Cannons.

Wheeljack is an Autobot Wrecker, like a brother to Bulkhead. Wheeljack is a cocky, reckless loose cannon who doesn't think very highly of human safety and rarely follow orders from his superiors like Optimus Prime and Ultra Magnus.