Rodolfo Vieira is a four-time IBJJF World Champion and 2015 ADCC champion who earned the nickname 'The Black Belt Hunter' after defeating established black belts as a brown belt at the 2009 Abu Dhabi World Pro. With a grappling record of 97-11 and 63 submissions, he transitioned to MMA in 2016 and currently competes in the UFC at middleweight, where the arm triangle choke remains his signature technique.