Thread:Undoniel/@comment-12959254-20151211214859/@comment-16461120-20151212003217

You can find a bit more information about the various TRANSFORMERS continuity changes over the years here.

As far as I can tell, in terms of TRANSFORMERS characters, only this particular Circuit Breaker is canon to Earth-616 due to her first appearance having been in, and that was done to ensure that Marvel Comics retained the rights to the character instead of Hasbro, after their legal dispute over original characters created in Rom Vol 1.