Who or what I would be in a work of fiction?
Not really a though one. The hardest part of this question is deciding what fiction I'd want to be in.
One thing is certain though; I'd DEFINITIVELY want to participate in a sci-fi story, either near future or distant future. I like plumbing and running water, thank you very much.
Sure, high fantasy sounds great, elves and magic and all, but I very much like hospitals and general healthcare. You don't see that in fantasy, do you now?
Imagine it yourself: Suppose you are this baddass generic warrior person, RARWH Slayer of a thousand men! And then one day, oops! An orc lopped your arm off. You're deep in the forest, all you got is the battleaxe in your remaining hand and the clothing on your back. In our time, or the future, you'd survive. Disabled, yes, but alive. You'd probably have your cellphone within reach, and a medical rescue chopper would come and get you.
But right there and then, your best hope is to find a mage or a healer or some such, and oh you are in the forest with a dead orc. Blood loss and gangrene is your company for the next couple of hours as you frantically search for the way back to that old settlement over the hill, and even if you make it there's no guarantee that they can do anything for you!
No thank you, science fiction is the path for me. Evil totalitarian regime, strict empire or bureaucratic senselessness, As long as I have electricity and a working toilet I'm satisfied.
Now onto the real reply then;
I'd be delighted to be one of the citizens in the first foundation in Asimov's "The foundation" series. Specifically I'd want to be in the story 'The Merchant Princes', taking place at roughly 175 F.E.
Superior technology and power? Yes please. I don't care what role I play in society, I'd fit in somewhere. Probably as a nurse or the equivalent of that. Yay life enhancing gizmo's!