John Randall Hennigan is an American professional wrestler, actor and traceur, who currently wrestles for Impact Wrestling under the ring name Johnny Impact, where he is the Impact World Champion in his first reign. He is best known for his tenure in WWE where he used the ring names John Morrison and Johnny Nitro. He is also known for wrestling on the independent circuit, Lucha Libre AAA Worldwide and Lucha Underground under the ring name Johnny Mundo.
Hennigan was the winner of Tough Enough III, a televised competition that would award the winner a WWE contract, and was assigned to their then developmental territory, Ohio Valley Wrestling , to continue his wrestling training. Hennigan was called up to the SmackDown! roster in April 2005 and on his debut match, Hennigan won the WWE Tag Team Championship. In the main roster, Hennigan won the ECW World Championship once and the Intercontinental Championship three times. He was also a prolific tag team wrestler, being a five-time world tag team champion .
After leaving WWE in November 2011, Hennigan began wrestling overseas on the independent circuit before finding success in lucha libre professional wrestling promotions Lucha Underground and Lucha Libre AAA Worldwide. In Lucha Underground, Hennigan won the main event of the debut episode, as well as the first ladder match and steel cage match in the promotion's history. He is also the second Triple Crown Champion, having held the Lucha Underground, Gift of the Gods and Trios Championship once each. In AAA, he was the promotion's first-ever triple champion, holding the AAA Mega, Latin American and World Cruiserweight Championships simultaneously. He also won the 2016 Lucha Libre World Cup. Hennigan also signed with Impact Wrestling in 2017. He headlined the promotion's 2017 and 2018 Bound for Glory events and won the Impact World Championship once.