Read more about Circuit Breaker at: Wikipedia

Official Site: Marvel

This list of Transformers supporting characters contains fictional human characters that ally with the Transformers (usually Autobots) in the various Transformers universes. Most are children or teenagers.

Buster Witwicky was the first Witwicky depicted in fiction, and filled a similar role in the early comics that Spike filled in the animated series.

Events exclusive to the Marvel U.K. Transformers comics are in italics.

While at a drive-in movie with his girlfriend Jessie and best friend "O", Buster suddenly found his life in danger when the parking lot became a battleground in the first major Earth-based clash between the Autobots and Decepticons. Coming across the wounded vehicle-mode Bumblebee, he brought the car back to his father's workshop, and attempted to fix it, until his father stepped in and completed the job.

Circuit Breaker has not been a contender in any CBUB matches.