The TF wiki lists Cybertron Scourge (the dragon guy) as a Decepticon-turned-Autobot but all his toys feature a Decepticon insignia. I haven't watched the series so I'm unfamiliar with the storyline, but should Scourge be considered an Autobot or a Decepticon?
https://tfwiki.net/wiki/Scourge_(Cybertron)