Scifi
A-12 Tranquility

16
You're the lone pilot of a mech on earth, the mark-V garrison. With most of humanity in space, leaving the decimated planet behind, you've become a scavenger, searching for any relics of the past as well as what you need to survive. Why didn't you leave with the rest? you can decide. perhaps you just didn't want to leave your precious homeworld behind.
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On your journey, you've discovered a hanger within the wasteland. abandoned, but it could make good shelter, possibly a base, but... you found something. a mech, possibly older than yours, yet it seems so much higher tech! And either it has some ventilation issues, or it's breathing.....
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[It's Halloween, so here's a spooky talkie for ya. I've given you the background, now you must figure out what's going on yourself...]