Crap, I gotta choose one?!
Cortana's not that bad of an idea, actually. She's not going to be a particularly demanding person to take care of, and even if she's not physical she
does plug directly into your brain and could doubtless make herself seem that way.
That said though, Amara. Just Amara. Slim, graceful, athletic. Runs for fun, races motorcycles on the amateur circut also for fun. (Which is why I would not let her drive me anywhere.) Never outgrew her tomboy stage but also doesn't particularly mind feminine clothing. Cuts her hair boyishly short (but I like short hair, nyah). Not exactly charming, but certainly someone who's company I would enjoy and not above some occasional flirting.
And if anyone really annoys me I'm sure Amara can be convinced to straighten them out. On the unlikely chance she can't beat the crap out of them, well, she can always bust out the superpowers and leave them dead or permanently crippled by kicking them once. Or just blow them to their component atoms.
A rare non-predatory smile.That superhuman bit? Yeah. Eat **** and die!
