is a Japanese professional wrestler and mixed martial artist currently working for New Japan Pro Wrestling ( NJPW ) , where he is a former three-time IWGP Heavyweight Champion , four-time IWGP Intercontinental Champion , one-time IWGP Tag Team Champion and the winner of the 2011 G1 Climax , 2006 G1 Tag League , and 2014 New Japan Cup tournaments .
He currently works for New Japan Pro Wrestling ( NJPW ) . He is a former three-time IWGP Heavyweight Champion , three-time IWGP Intercontinental Champion , one-time IWGP Tag Team Champion and was the winner of the 2011 G1 Climax , 2006 G1 Tag League and 2014 New Japan Cup tournaments .