Contrary to the comma in his name, is just one person. That being said, though, Bladiator is an awesome remixer. He remixes video game music and adds great piano elements to his music. It's great. :]
http://www.last.fm/music/Bladiator%2C+The+Orichalcon
http://www.ocremix.org/remixer/bladiator/
All his music is there. :)