He isn't, he's stated that before. But that doesn't matter, to be honest. He's still awesome. ^^
Funny thing is that I discovered him while browsing some pony art, and one led to his let's play of a pony mod for SCP Containment Breach.
So that ponysona is not made by him then?
I should've written that it was a ponified Markiplier instead of it being his ponysona, huh? *facepalm*
That's what happens when I create a post t 2 AM. 
Anyway, I need to correct a couple of things on this comic first, but once I'm done with that, I'll polish up the description.
Yeah that happens a lot with me. 