Yeah the guy's a demon, there's no doubt about that.
The Protector (AKA Tom Yum Goong internationally) isn't Ong Bak 2, it's just a similar film directed by the same guy and starring Tony Jaa and some of the same cast again. It's set in more of an urban enviornment and deals with a descendant of the Royal family trying to retrieve a sacred elephant (I know it sounds ridiculous), I prefer it to Ong Bak really. Ong Bak 2, the actual sequel, is set to release next year and aside from starring, the film will be Tony Jaa's directorial debut with Panna Rittikrai as assistant choreographer.