- Born: 10/03/1979 in Palos Verdes, California
- Birthname: Johnny Mundo
- Height & Weight: 6'0", 215 Ib
- ECW World Championship (1 time)
- WWE Intercontinental Championship (3 times)
- World Tag Team Championship (1 time) – with The Miz
- WWE Tag Team Championship (4 times) – with Joey Mercury (3) and The Miz (1)
- Tough Enough III with Matt Cappotelli
Best known for his tenure with the WWE where he was better known by his ring names John Morrison and Johnny Nitro. He currently wrestles for Lucha Underground under the ring name Johnny Mundo.
Hennigan entered Tough Enough III, a televised competition that would award the winner a WWE contract.
He was one of the winners in the competition and assigned to their developmental territory, Ohio Valley Wrestling (OVW), to continue his wrestling training. While situated at OVW, he was placed in a tag team with Joey Mercury, and the duo won the OVW Southern Tag Team Championship on one occasion. Alongside their manager Melina, the stable was called MNM.
After signing with WWE, MNM was called up to the SmackDown! roster and on their debut in April 2005, Hennigan and Mercury went on to win the WWE Tag Team Championship. When their third and final reign ended in May 2006, Hennigan and Melina turned on Mercury. Hennigan and Melina were let go from the SmackDown! roster and debuted on the Raw brand. During his time with the brand, Hennigan competed in singles competition and won the WWE Intercontinental Championship twice.
In June 2007, Hennigan was drafted from Raw to the ECW brand. During that time, he won the vacant ECW World Championship once, and was a sporadic world title contender for the remainder of his tenure with WWE. He formed a partnership with The Miz in late 2007, with the two capturing the WWE Tag Team Championship and the World Tag Team Championship on separate occasions, and winning the 2008 Tag Team of the Year Slammy Award.
They split in April 2009, and Morrison returned to SmackDown, where he won the Intercontinental Championship for the third time in September
2009. In November 2011, Hennigan left WWE, and began wrestling overseas and on the United States independent circuit before signing with Lucha Underground in September 2014.
vs Matt Cappotelli
vs Jeff Hardy
vs John Cena
vs CM Punk
w/ The Miz vs Cryme Tyme
w/ The Miz vs Carlito & Primo
vs Shelton Benjamin
vs King Cuerno
Other Notable Achievements
CWF United States Championship (1 time)
FWE Heavyweight Championship (1 time)
NGW World Championship (1 time)
OVW Southern Tag Team Championship (1 time) – with Joey Mercury
QPW Souq Waqif Championship (1 time)
WWFX Heavyweight Championship (1 time)
Wrestling Observer Newsletter Award: Tag Team of the Year (2008) – with The Miz