Obsession. That's a funny little word. It can mean oh so many things to oh so many ponies. They tell me that I've got an obsession. And you know what? They're right. With what, you ask? Why, that's simple: the Elements of Harmony. I have watched and stalked after them my whole life, only now do they take form.
My Whole life has been one long quest, one long lust, after the Elements. But is it not the powers of Harmony nor the mares themselves that I crave, no. I desire their antithesis: Gloom, Penury, Faithlessness, Facility, and Spite. I shall assign them to the ponies who best represent these forces. Why do this? Simple really. Because I must and because I can. Yet of these two forces the second in the greater; I do this because I choose to.
And in the end history will remember me as a hero.

Cauterium

Ok i know what your think. Slenderman the guy that kidnaps kids and there never heard from again? Surely not that slenderman!
Well yes that slenderman is exactly who i'm talking about. Of course you and him aren't great friends like me and him i suppose.

A not so standard human-in-Equestria story including but not limited to: democracy, tequila, and robots.

Things escalate from there.

TV Tropes page

Now translated into Korean