"1Mastermind" on Full Tilt Poker is Canadian born Benny Chen, a former restaurant manager.
On Full Tilt Poker "1Mastermind" has been spotted at the cash games tables, playing stakes as high as $200/$400. The hands comes from Pot Limit Omaha Hi and Fixed Limit Omaha Hi/Lo, but also some draw games.
Chen has been quite active in tournaments, both in Casinos and Online, as for the majority of tournament players out there, it's been mostly about the No Limit format of Hold'em, but Chen has also thrown in some Fixed Limit and PLO in the mix. He has made around $750K live and online combined.
Here is a video where Chen plays AQ in a relatively orthodox way at the PokerStars PCA EPT NLHE main event in 2009. Where he finished in 14th place, and got $95K for his efforts, Chen biggest tournament win to date.