He's a guest, he isn't registered to the forum. Seems that back in 2008 guests were allowed to post, now they aren't.
Edit: I've checked his achievements, and he appears to be a player so I don't know, maybe he posted while he was a guest, then registered, but the forum didn't update all of his posts with new info (name, avatar, etc.).
Last edited by WeppetKo; Aug 30, 2015 at 04:14 PM.