As the title says, assuming you needed humans (and I know there are lot of ways to not need them), how would you write them? How would they find out about the Transformers? How would they prove useful to their robot partners? Being a productive host, I'll begin. I'm thinking that the paramilitaries of the movies made alot of sense. They would start out like Thunderbolt Ross' Hulkbusters; not very effective but still capable. They would follow the reportings of the Autobots and eventually catch up to them. When the Decepticons do something to prove they are against them (early on because this type 0f robot vs. man conflict is very onesided), the organization would be reformed into a team to help the Autobots in a supporting role. There would be a liason to the government who likes the bots, but is technically after America and NATO's interests (so he may act semi-antagonistical on occaision but still be an ally). The Thunderbolt Ross would be an agent and have a Fanzone like relationship towards the bots. In his mind, they might be the good guys of this war, but they're still responsible for bringing it here in the first place. The final main character (for now), would be a scientist who is very curious in these visitors. He'd be very intelligent (Why else would this group invite him?) but somewhat naive in practicality. Obviously, the Autobots have better technology, but he is chiefly for research and intelligence. Any other characters working for the Autobots would be the family and friends who get entangled into this mess. Of course, any smart army knows you need insider info on foreign lands. Thus, the Decepticons, especially Megatron, also make human allies. Not having the same reservations as Optimus, I envision he'd be bartering technology towards weapon developers, mercenaries, and dictatorships for resources. I think I'll focus on the weapon developer angle who'd be the public face for said deals and would act sort of like a nonrepentant Tony Stark doing what he does in the beginning of the Ironman movie. Naturally, this isn't a place just for me to blabber on, so come in and post your own ideas.