His first post was a link to the monk. Apparently, no, it's not fanart for Diablo 3, unless developer JP LeBreton, who tweeted he'd been working on the related Monk link for nine months, has a lot of down time at Double Fine.
Gilbert later posted the hillbilly, a character we recognize from the puzzle Double Fine sent the press last week as an announcement of a new, spooky-tinged title. Now the age-old question returns: What do a monk and a hillbilly have in common? Besides mystery, of course.