So...if I am to offer anything to this au, I'm gonna add in some of my favorite tropes that hardly ever are used in anything. Years and years go by, Matt and Tom are long dead. Edd is still here, he will always be here. Was he human? Undoubtedly. Does he look human? Absolutely not. Does he feel human? Even less so. At this point he has lost all trace of humanity. At this point he's pretty much the Elephant's Foot. He is a monster, and boy does he feel like one (pt 1/2)
(pt 2/2) He hasn’t had contact with anything living for years, and can no longer maintain a “human” form. If he is able to pull himself together long enough for a form, it’s unrecognizable for what it’s supposed to be. And so he wallows wherever he is, alone and insane, craving the company of something that can stand his presence. It takes a while, but a voice calls to him. “Heh, finally found ya loser. Couldn’t you have stayed in one place longer?” It’s Eduardo, suffering the same fate.
*tears up* tHe fuCKIng GOOD SHIT