ok so I maybe got carried away and designed an entire tfp version of sunstorm.... guess i'm dual wielding au's again!
I like to think they where one of shockwaves secret pet projects, and starscream had absolutely no idea he was cloned- much to his horror when sunstorm breaks out of the lab and terrorizes the nemesis during his escape.
the autobots think starscream changed his paint and went rouge again, until wheeljack jokingly takes a shot at him after spotting him on recon, and unlike starscream (who has years of combat training) sunny just, tanks the hit and goes down.
wheeljack goes after him since.. something isn't right about the situation. and is horrified to learn that he shot a non-combatant down. especially considering he's pretty mangled from the crash, and seemingly having some kind of.. temperature regulation crisis?
he winds up having to call ratchet.











