Some dude from some spanish (I assume) speaking country. It is indeed a specific person. He has this blog spot here:
http://aliasa45.blogspot.com/?zx=815a5ca5fedf6c67
He does alot of weird stuff with people's characters and pics. I happen to know these things, because he posts alot of Crubat's stuff, alot. In the past he made this extremely poorly drawn comic which sometimes featured Crubat's and my characters (and others), doing and saying who knows what in handwriting I could not even attempt to translate. On top of all this, he often seems to claim the characters belong to him, or are "with" him...or, something, I don't know. It's kind of a piss off, but whatever.