If we are to go by what the beta has shown us, then the main character (your guardian) is a resurrected being. They have left it open enough to basically let you make up a Backdoor for your guardian. I would just like to see if anyone has thought up a good past-life Backdoor for their character, for roleplaying purposes of course.
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(Judging by the cooped up cars.) I Believe my Guardian was there to crowd control during the initial attack on Earth. People were fleeing for the Safety of the Massive walls of the Cosmodrome. Judging from the position where the Guardians body was found, you're off to the side of the pile of cars, on an up rise in the terrain...excellent for someone to keep watch over the fleeing masses. That's what I'm thinking anyway.