Lol. Well that depends. I haven't gotten to read many of the comics, I've watched most of the Animated things - and I watched the movies - even though I hate them ... cause sexy cars... and OP voice. 
LLet's see ... who would you want to play? I've played most of the Autobots as well as some of the Cons. I also have two OC's that I've played and developed for years. We could do an earth based with humans or we could do strictly space and make up stuff I'm not particular about the settings