Hmmm... I guess it doesn't have to specifically be the Perceptor from the Mirrorverse, just one from a reality where Autobots and Decepticons have switched roles, more or less. I know in the DeadZone, there are evil Autobots so the Mirrorverse isn't the only one with that idea.

I'm looking forward to reading your fic, if you do decide to write it.