I’ve been browsing TVTropes for building blocks as possible inspirations/influences into the MC’s personality choices and the world they live in and this is what I’ve come up with:
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No Antagonist - Considering you’re living in a crap-sack world, surviving/avoiding a cannibalistic species that you’re half of, and facing discrimination as a “monster” this is going to be how the game will operate. There’ll be challenges, or challengers, that the MC will face but there is no Antagonist who’s out to oppose/foil the MC at every single turn.
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Hero Protagonist - Can be aspired towards, but ultimately I’ll play this where the MC’s behavior resembles Paragon Shepard’s in ME3.
I realize that a lot of these tropes are related, and sometimes overlap, but there is a reason for that. If you have any suggestions, feel free to speak your mind! 
Edit: I’ve been looking at characters from various media and found some more tropes that could add some well-rounding to what I already have.