Chad Allegra (born January 20, 1980) is an American professional wrestler better known by his stage name "The Machine Gun" Karl Anderson currently working for New Japan Pro Wrestling (NJPW), where he is in his second reign as one half of the IWGP Tag Team Champions. He holds the record for the longest reign and the most defenses with the title, achieved on his first reign with former partner Giant Bernard. Anderson and Bernard are also former Pro Wrestling Noah's GHC Tag Team Champions. Anderson is also a three-time winner of NJPW's top tag team tournament, the G1/World Tag League, having won it in 2009 with Bernard, in 2012 with Hirooki Goto and in 2013 with Doc Gallows. He also wrestled for Southern California-based independent promotion Pro Wrestling Guerrilla (PWG) between 2007 and 2009.