Christopher Keith "Chris" Irvine, best known by his ring name, Chris Jericho, is an American-born Canadian semi-retired professional wrestler, musician, media personality, actor, author, and businessman. Best known for his work with WWE since 1999, he is also well known for his time in Extreme Championship Wrestling and World Championship Wrestling, and internationally in Canadian, Mexican, German and Japanese promotions. Jericho is known for his over-the-top, rock star persona – dubbed "The Ayatollah of Rock 'n' Rolla" – and for a contrasting run as an aloof villain in the late 2000s and early 2010s.
Jericho has won 30 championships between WWF/E, WCW, and ECW – the three most prominent American promotions in the 1990s and early 2000s. He is credited as being the first Undisputed WWF Champion, having unified the World Championship and the WWF Championship by defeating The Rock and Stone Cold Steve Austin on the same night in 2001. Jericho is also a Grand Slam champion and, currently, the only Grand Slam champion to have held every title in the WWE.
Jericho has been a challenger to major world championships since the mid 1990s. In WWE, he is a six-time world champion, having won the WWF Championship once, the WCW/World Championship twice and the World Heavyweight Championship three times. He is also a record nine-time Intercontinental Champion – beating out four other contenders in a 2013 WWE viewer poll to determine the greatest champion in history, with a landslide 63% of the vote; and the fourth WWE Grand Slam Champion. Jericho has headlined many major pay-per-views for WWE in the 2000s and 2010s, including the 18th edition of the company's premier event, WrestleMania, in 2002.