That's what I thought as a possibility, too, but both Bash and Nosty have been insisting that it's a human. A giant human with pointy teeth who can either buy or fashion chains and nail them into the ground, but a human nonetheless.

BTW, itsmemandy, did you get my PM?

ETA: Gotta do some actual work and I'll be away most of the afternoon my time. It's 10:51am here right now. Will check in when I can.