Jeffrey Cobb is an American professional wrestler and former amateur wrestler currently signed to New Japan Pro-Wrestling, where he is a member of the United Empire stable.

Prior to coming to NJPW, Cobb wrestled in Lucha Underground (as the masked wrestler Matanza Cueto), Ring of Honor and Pro Wrestling Guerrilla. He is a former PWG World Champion and is also the winner of PWG's 2018 Battle of Los Angeles tournament and a former one-time World Tag Team Champion with Matt Riddle. In NJPW, he is also a former NEVER Openweight Champion and a two-time IWGP Tag Team Champion (with Great-O-Khan). In ROH, he is a former ROH Television Champion.