In 1995, Jericho began wrestling for Extreme Championship Wrestling (ECW), winning the ECW World Television Championship from Pitbull #2 in June 1996. While in ECW, Jericho wrestled Taz, Sabu, Rob Van Dam, Cactus Jack, Shane Douglas, and 2 Cold Scorpio. It was during this time that he drew the attention of World Championship Wrestling (WCW).
On August 26, 1996, Jericho made his first appearance with WCW on Monday Nitro against Alex Wright, and on September 15, he appeared at his first pay-per-view show in a match against Chris Benoit at Fall Brawl. On June 28, 1997, Jericho defeated Syxx in Los Angeles, California to win the WCW Cruiserweight Championship for the first time. He won the title again on August 12, 1997, by defeating Alex Wright.
Jericho began his run as a heel when he won the title a third time by defeating Rey Mysterio Jr. at Souled Out by forcing him to submit to the Liontamer. After the match, Jericho assaulted Mysterio's knee with a toolbox. In the storyline, Mysterio needed six months of recovery before he could return to the ring. Jericho then had a short feud with Juventud Guerrera in which Guerrera repeatedly requested a shot at Jericho's Cruiserweight Championship, but Jericho constantly rebuffed him. The feud culminated in a Title versus Mask match at SuperBrawl VIII. Guerrera lost the match and was forced to remove his mask. Following this match, Jericho began his ongoing gimmick of collecting and wearing to the ring trophy items from his defeated opponents, such as Guerrera's mask, Prince Iaukea's Hawaiian dress, and a headband from Disco Inferno.
Jericho then began a long feud with Dean Malenko, in which Jericho repeatedly claimed he was a better wrestler than Malenko, but refused to wrestle him. Because of his mastery of technical wrestling, Malenko was known as "The Man of 1,000 Holds", so Jericho claimed to be "The Man of 1,004 Holds".
During the March 30, 1998 episode of Nitro, after defeating Marty Jannetty, Jericho pulled out a long pile of paper that listed each of the 1,004 holds he knew and recited them to the audience. Many of the holds were fictional, and nearly every other hold was an armbar. On the March 12, 1998 episode of Thunder, Malenko defeated a wrestler wearing Juventud Guerrera's mask who appeared to be Jericho. However, the masked wrestler was actually Lenny Lane, whom Jericho bribed to appear in the match. This started a minor feud between Lane and Jericho after Jericho refused to pay Lane. At Uncensored, Jericho finally wrestled Malenko and defeated him, after which Malenko took a leave of absence from wrestling. Jericho then proceeded to bring with him to the ring a portrait of Malenko that he insulted and demeaned. Just prior to Slamboree, J.J. Dillon (referred to by Jericho as "Jo Jo") scheduled a cruiserweight battle royal, the winner of which would immediately have a shot at Jericho's Cruiserweight Championship. Jericho accepted on the grounds that whoever he faced would be too tired to win a second match. At Slamboree, Jericho came out to introduce the competitors in an insulting fashion before the match started and then went backstage for coffee. An individual who appeared to be Ciclope won the battle royal after Juventud Guerrera shook his hand and then eliminated himself. The winner was a returning Malenko in disguise. Following one of the loudest crowd reactions in WCW history, Malenko proceeded to defeat Jericho for the championship. Jericho then claimed he was the victim of a carefully planned conspiracy to get the belt off of him. He at first blamed the WCW locker room, then added Dillon, Ted Turner, and finally in a vignette, he walked around Washington, D.C. with the sign "conspiracy victim" and accused President Bill Clinton of being one of the conspirators after being rejected from a meeting. Eventually, Malenko vacated the title. Jericho ended up defeating Malenko at The Great American Bash to win the vacant title after Malenko was disqualified after hitting Jericho with a chair. The next night, Malenko was suspended for his actions.
At Bash at the Beach, the recently returned Rey Mysterio Jr. (who had recovered from his knee injury) defeated Jericho in a no disqualification match after the still-suspended Malenko interfered. Jericho regained the Cruiserweight Championship from Mysterio the next night after he interrupted J.J. Dillon while Dillon was giving the championship to Mysterio. Jericho was again awarded the championship. Eventually, Jericho decisively lost the title to Juventud Guerrera in a match at Road Wild with Malenko as special referee.
On August 10, Jericho defeated Stevie Ray to win the WCW World Television Championship (Stevie Ray substituting for the champion Booker T). Soon afterward, Jericho repeatedly called out WCW World Heavyweight Champion Goldberg in an attempt to begin a feud with him, but never actually wrestled him.
On November 30, Jericho lost the World Television Championship to Konnan. In early 1999, Jericho began a feud with Perry Saturn. The feud saw Jericho and Saturn instigating bizarre stipulation matches, such as at Souled Out, where Jericho defeated Saturn in a "loser must wear a dress" match. At SuperBrawl IX, Jericho and Saturn wrestled in a "dress" match which Jericho won. Saturn finally defeated Jericho at Uncensored in a Dog Collar match. Jericho's final WCW match came during a Peoria, Illinois house show July 21, where he and Eddie Guerrero lost to Billy Kidman and Rey Mysterio Jr. in a tag team match.
In the weeks before Jericho's World Wrestling Federation (WWF) debut, a clock labeled "countdown to the new millennium" appeared on WWF programming. The clock finally ran out on the August 9, 1999 episode of Raw is War in Chicago, Illinois while The Rock was in the ring cutting a promo on the Big Show. Jericho entered the arena and proclaimed "Raw is Jericho" and that he had "come to save the World Wrestling Federation", referring to himself as "Y2J" (a play on the Y2K bug). The Rock proceeded to verbally mock him for his interruption. Later that month, he would interact with several superstars including in particular interrupting a promo that The Undertaker was involved in, Jericho made his in-ring debut as a heel on August 26, losing a match against Road Dogg by disqualification on the inaugural episode of SmackDown! after he performed a powerbomb on Road Dogg through a table.
Jericho's first long-term feud was with Chyna, for the WWF Intercontinental Championship. After losing to Chyna at Survivor Series, Jericho defeated her to win his first WWF Intercontinental Championship at Armageddon. This feud included a controversial decision during a rematch in which two separate referees declared each one of them the winner of a match for the title. As a result, they became co-champions, during which Jericho turned face. He attained sole champion status at the Royal Rumble.
Jericho lost the WWF Intercontinental Title to then-European Champion Kurt Angle at No Way Out. Jericho competed in a triple threat match against Chris Benoit and Angle at WrestleMania 2000 in a two-falls contest with both of Angle's titles at stake. Jericho won the European Championship by pinning Benoit, who in turn pinned Jericho to win the WWF Intercontinental Championship. This was the first of six pay-per-view matches between the pair within twelve months. Jericho lost the title the next day to Eddie Guerrero on Raw after Chyna sided with Guerrero.
On the April 17 episode of Raw, Jericho upset Triple H in a WWF Championship match. Referee Earl Hebner made a fast count when Jericho pinned Triple H, causing Jericho to win the title. Hebner later reversed the decision due to pressure from Triple H, and WWE does not recognize Jericho's reign as champion. On the May 4 episode of SmackDown!, Jericho defeated Benoit to win his third WWF Intercontinental Championship, but lost the title to Benoit four days later on Raw. Jericho's feud with Triple H ended at Fully Loaded, when they competed in a Last Man Standing match. Jericho lost the match to Triple H only by one second, despite the repeated assistance Triple H's wife, Stephanie, provided him in the match.
At the 2001 Royal Rumble, Jericho defeated Chris Benoit in a ladder match to win the WWF Intercontinental Championship for the fourth time. At WrestleMania X-Seven, he successfully defended his title in a match against William Regal, only to lose it four days later to Triple H. At Judgment Day, Jericho and Benoit won a tag team turmoil match and earned a shot at Stone Cold Steve Austin and Triple H for their WWF Tag Team Championship on Raw the next night. Benoit and Jericho won the match, in which Triple H legitimately tore his quadriceps, spending the rest of the year injured. Benoit and Jericho each became a WWF Tag Team Champion for the first time. The team defended their title in the first fatal four-way Tables, Ladders and Chairs match, where Benoit sustained a year-long injury after missing a diving headbutt through a table. Despite Benoit being carried out on a stretcher, he returned to the match to climb the ladder and retain the championship. The two lost the title one month later to The Dudley Boyz on the June 21 episode of SmackDown!. At King of the Ring, both Benoit and Jericho competed in a triple threat match for Austin's WWF Championship, in which Booker T interfered as the catalyst for The Invasion angle. Despite Booker T's interference, Austin retained the title.
In the following months, Jericho became a major force in The Invasion storyline in which WCW and ECW joined forces to overtake the WWF. Jericho remained on the side of the WWF despite previously competing in WCW and ECW. However, Jericho began showing jealousy toward fellow WWF member The Rock. They faced each other in a match at No Mercy for the WCW Championship after Jericho defeated Rob Van Dam in a number one contenders match on the October 11 episode of SmackDown!. Jericho won the WCW Championship at No Mercy when he pinned The Rock after debuting a new finisher, the Breakdown, onto a steel chair, winning his first world title in the process. One night later, the two put their differences aside and won the WWF Tag Team Championship from the Dudley Boyz.
After they lost the titles to Test and Booker T on the November 1 episode of SmackDown!, they continued their feud. On the November 5 episode of Raw, The Rock defeated Jericho to regain the WCW Championship. Following the match, Jericho attacked The Rock with a steel chair. At Survivor Series, Jericho turned heel by almost costing Team WWF the victory in their elimination matchup by once again attacking The Rock. Despite this, the WWF won the match. At Vengeance, Jericho defeated both The Rock for the WCW Championship (unbranded and only referred to as the World Championship following Survivor Series) and Stone Cold Steve Austin for his first WWF Championship on the same night to become the first wrestler to hold both championships at the same time, which made him the first-ever Undisputed WWF Champion, as well as the fourth Grand Slam winner under the original format. He retained the title at the Royal Rumble against The Rock and at No Way Out against Austin. Jericho later lost the title to Royal Rumble winner Triple H in the main event of WrestleMania X8. Jericho was later drafted to the SmackDown! brand in the inaugural WWF draft lottery. He would then appear at Backlash, interfering in Triple H's WWF Undisputed Championship match against Hulk Hogan. He was quickly dumped out the ring, but Triple H would go on to lose the match. This would lead to a Hell in a Cell match at Judgment Day in May, where Triple H would emerge victorious. Jericho would then compete in the 2002 King of the Ring tournament, defeating Edge and The Big Valbowski to advance to the semi-finals, where he was defeated by Rob Van Dam at King of the Ring. In July, he began a feud with the debuting John Cena, losing to him at Vengeance.
After his feud with Cena ended, Jericho moved to the Raw brand in July, unwilling to work for then-General Manager Stephanie McMahon. Upon his arrival to the brand, he initiated a feud with Ric Flair, leading to a match at SummerSlam, which Jericho lost. On the September 16 episode of Raw, he won the WWE Intercontinental Championship for the fifth time from Rob Van Dam, before losing the title to Kane two weeks later on Raw. He then later formed a tag team with Christian, with whom he won the World Tag Team Championship by defeating Kane and The Hurricane on the October 14 episode of Raw. Christian and Jericho lost the titles to Booker T and Goldust in a fatal four-way elimination match, involving the teams of The Dudley Boyz, and William Regal and Lance Storm at Armageddon.
On the January 13 episode of Raw, Jericho won an over-the-top-rope challenge against Kane, Rob Van Dam, and Batista to select his entry number for the Royal Rumble match. He chose number two in order to start the match with Shawn Michaels, who had challenged him to prove Jericho's claims that he was better than Michaels. After Michaels's entrance, Jericho entered as the second participant. Christian, in Jericho's attire, appeared while the real Jericho attacked Shawn from behind. He eliminated Michaels shortly afterward, but Michaels got his revenge later in the match by causing Test to eliminate Jericho. Jericho spent the most time of any other wrestler in that same Royal Rumble. Jericho simultaneously feuded with Test, Michaels, and Jeff Hardy, defeating Hardy at No Way Out. Jericho and Michaels fought again at WrestleMania XIX, which Michaels won. Jericho, however, attacked Michaels with a low blow after the match following an embrace.
After this match, Jericho entered a rivalry with Goldberg, which was fueled by Goldberg's refusal to fight Jericho in WCW. During Jericho's first episode of the Highlight Reel, an interview segment, where Goldberg was the guest, he complained that no-one wanted Goldberg in WWE and continued to insult him in the following weeks. On the May 12 episode of Raw, a mystery assailant attempted to run over Goldberg with a limousine. A week later, Co-Raw General Manager, Stone Cold Steve Austin, interrogated several Raw superstars to find out who was driving the car. One of the interrogates was Lance Storm, who admitted that he was the assailant. Austin forced Storm into a match with Goldberg, who defeated Storm. After the match, Goldberg forced Storm to admit that Jericho was the superstar who conspired Storm into running him over. On the May 26 episode of Raw, Goldberg was once again a guest on the Highlight Reel. Jericho expressed jealousy towards Goldberg's success in WCW and felt that since joining WWE, he had achieved everything he had ever wanted in his career and all that was left was to defeat Goldberg and challenged him to a match. At Bad Blood, Goldberg settled the score with Jericho and defeated him.
On the October 27 episode of Raw, Jericho won his sixth WWE Intercontinental Championship when he defeated Rob Van Dam. He lost the title back to Van Dam immediately after in a steel cage match. Later in 2003, Jericho started a romance with Trish Stratus while his tag team partner Christian began one with Lita. This, however, turned out to be a bet over who could sleep with their respective paramour first, with a Canadian dollar at stake. Stratus overheard this and ended her relationship with Jericho, who seemingly felt bad for using Stratus. After he saved her from an attack by Kane, Stratus agreed that the two of them could just be "friends", thus turning Jericho face. After Christian put Stratus in the Walls of Jericho while competing against her in a match, Jericho sought revenge on Christian, which led to a match at WrestleMania XX. Christian defeated Jericho after Stratus ran down and "inadvertently" struck Jericho (thinking it was Christian) and Christian got the roll-up. After the match, Stratus turned on Jericho and revealed that she and Christian were a couple. This revelation led to a handicap match at Backlash that Jericho won. Jericho won his record-breaking seventh WWE Intercontinental Championship at Unforgiven in a ladder match against Christian, breaking the previous record held by Jeff Jarrett from 1999. Jericho's seventh reign was short lived, as he lost it at Taboo Tuesday to Shelton Benjamin.
Jericho teamed up with Randy Orton, Chris Benoit, and Maven to take on Triple H, Batista, Edge, and Snitsky at Survivor Series. The match stipulated that each member of the winning team would be the General Manager of Raw over the next four weeks. Jericho's team won, and took turns as General Manager. During Jericho's turn as General Manager, the World Heavyweight Championship was vacated because a Triple Threat match for the title a week earlier ended in a draw. At New Year's Revolution, Jericho competed in the Elimination Chamber against Triple H, Chris Benoit, Batista, Randy Orton, and Edge for the vacant World Heavyweight Championship. Jericho began the match with Benoit and eliminated Edge, but was eliminated by Batista. Triple H went on to win. At WrestleMania 21, Jericho participated in the first ever Money in the Bank ladder match. Jericho suggested the match concept, and he competed in the match against Benjamin, Benoit, Kane, Christian, and Edge. Jericho lost the match when Edge claimed the briefcase.
At Backlash, Jericho challenged Shelton Benjamin for the WWE Intercontinental Championship, but lost the match. Jericho lost to Lance Storm at ECW One Night Stand. Jericho used his old "Lionheart" gimmick, instead of his more well known "Y2J" gimmick. Jericho lost the match after Jason and Justin Credible hit Jericho with a Singapore cane, which allowed Storm to win the match. The next night on Raw, Jericho turned heel by betraying WWE Champion John Cena after defeating Christian and Tyson Tomko in a tag team match. Jericho lost a Triple Threat match for the WWE Championship at Vengeance which also involved Christian and Cena. The feud continued throughout the summer and Jericho lost to Cena in a WWE Championship match at SummerSlam.
His last appearance in WWE on the next night on the August 22 episode of Raw, Jericho faced Cena again in a rematch, this time in a "You're fired" match. Cena won again, and Jericho was fired by Raw General Manager Eric Bischoff. Jericho was carried out of the arena by security as Kurt Angle attacked Cena. Jericho's WWE contract expired on August 25.
After a two-year hiatus, WWE promoted Jericho's return starting on the September 24, 2007 episode of Raw with a viral marketing campaign using a series of 15-second cryptic binary code videos. The videos contained hidden messages and biblical links related to Jericho. Jericho made his return to WWE television as a face on the November 19, 2007 episode of Raw when he interrupted Randy Orton during Orton's orchestrated "passing of the torch" ceremony. Jericho revealed his intentions to reclaim the WWE Championship in order to "save" WWE fans from Orton. On the November 26 episode of Raw, Jericho defeated Santino Marella and debuted a new finishing move called the Codebreaker. At Armageddon, he competed in a WWE Title match against Orton, defeating him by disqualification when SmackDown!'s color commentator John "Bradshaw" Layfield interfered in the match, but Orton retained the title. He began a feud with JBL and met him at the Royal Rumble. Jericho was disqualified after hitting JBL with a steel chair. On the March 10 episode of Raw, Jericho captured the WWE Intercontinental Championship for a record eighth time when he defeated Jeff Hardy.
In April 2008, Jericho became involved in the ongoing feud between Shawn Michaels and Batista when he suggested that Michaels enjoyed retiring Ric Flair, causing Shawn Michaels to attack him. Jericho thus asked to be inserted into the match between Batista and Michaels at Backlash, but instead, he was appointed as the special guest referee. During the match at Backlash, Michaels feigned a knee injury so that Jericho would give him time to recover and lured Batista in for Sweet Chin Music for the win. After Backlash, Jericho accused Michaels of cheating, but Michaels continued to play up an injury. When Jericho was finally convinced and he apologized to Michaels for not believing him, Michaels then admitted to Jericho that he had faked his injury and he attacked Jericho with Sweet Chin Music. After losing to Michaels at Judgment Day, Jericho initiated a handshake after the match.
On the June 9 episode of Raw, Jericho hosted his talk show segment, The Highlight Reel, interviewing Michaels. Jericho pointed out that Michaels was still cheered by the fans despite Michaels's deceit and attack on Jericho during the previous months, whereas Jericho was booed when he tried to do the right thing. Jericho then assaulted Michaels with a low blow and sent Michaels through the "Jeritron 6000" television, damaging the eye of Michaels, and turning heel in the process. At Night of Champions, Jericho lost the WWE Intercontinental Title to Kofi Kingston after a distraction by Michaels. In June, Jericho took on Lance Cade as a protegé.
Afterward, Jericho developed a suit-wearing "self righteous honest man" gimmick. In doing so, Jericho purposely shed many of the trademarks associated with the "Y2J" character, taking "every characteristic that made him popular, and stripping those traits away from himself." Jericho and Michaels met at The Great American Bash, which Jericho won after attacking the cut on Michaels's eye. At SummerSlam, Michaels said that his eye damage would force him to retire and insulted Jericho by saying he would never achieve Michaels's success. Jericho tried to attack Michaels, but Michaels ducked, so Jericho punched Michaels's wife, Rebecca, instead. As a result, they fought in an unsanctioned match at Unforgiven, which Jericho lost by referee stoppage. Later that night, Jericho entered the Championship Scramble as a replacement for the defending champion CM Punk and subsequently won the World Heavyweight Championship, defeating Batista, John "Bradshaw" Layfield, Kane, and Rey Mysterio. Jericho then successfully defended his title against Michaels at No Mercy in a ladder match after Lance Cade interfered. At Cyber Sunday, Jericho lost the title to Batista in a match with Stone Cold Steve Austin as special guest referee. Eight days later on the 800th episode of Raw, Jericho defeated Batista to win back the title in a steel cage match. Jericho defeated Michaels in a Last Man Standing match on the November 10 episode of Raw after interference from John "Bradshaw" Layfield. Jericho lost the World Heavyweight Championship at Survivor Series to the returning John Cena. On the December 8 episode of Raw, Jericho was awarded the Slammy Award for 2008 Superstar of the Year award. Six days later, he lost his rematch with John Cena for the World Heavyweight Championship at Armageddon.
On the January 12, 2009 episode of Raw, WWE Executive Vice President Stephanie McMahon fired Jericho, but he was rehired the following week after making a forced apology. On February 15 at No Way Out, he lost an Elimination Chamber match to Edge for the World Heavyweight Championship also involving Cena, Rey Mysterio, Kane and Mike Knox. Jericho also had an on-screen feud with film star Mickey Rourke and with four WWE Hall of Famers. Jericho challenged and attacked Ric Flair, Roddy Piper, Jimmy Snuka and Ricky Steamboat on various episodes of Raw leading to WrestleMania XXV, where he won a handicap elimination match against Snuka, Steamboat and Piper. After this, Jericho challenged Rourke who was at ringside and as part of the storyline was knocked out by Rourke.
On the April 13 episode of Raw, Jericho was drafted to the SmackDown brand as part of the 2009 WWE draft. Ricky Steamboat interrupted Jericho's Raw farewell address, which led to the two facing off at Backlash where Jericho was victorious. On the May 1 episode of SmackDown, Jericho participated in a fatal-four-way elimination match against Kane, Jeff Hardy, and Rey Mysterio to determine the number one contender for the World Heavyweight Championship, where he was disqualified for throwing a chair at Mysterio. This started a feud between the two, where Mysterio defeated Jericho at Judgment Day to retain the Intercontinental Championship. Jericho defeated Mysterio in a no holds barred match at Extreme Rules to win his ninth Intercontinental Championship, breaking his own record again. At The Bash, Jericho lost the Intercontinental title to Mysterio in a mask versus title match.
Later in the event, Jericho and his partner Edge won the Unified WWE Tag Team Championship as surprise entrants in a triple threat tag team match. As a result of this win, Jericho became the first wrestler to win every (original) Grand Slam eligible championship. Shortly thereafter, Edge suffered an injury and Jericho revealed a clause in his contract to allow Edge to be replaced and Jericho's reign to continue uninterrupted. At Night of Champions, Jericho revealed Big Show as his new tag team partner and Jeri-Show defeated Cody Rhodes and Ted DiBiase to retain the championship. Jeri-Show successfully defended the title against Cryme Tyme at SummerSlam, MVP and Mark Henry at Breaking Point and Rey Mysterio and Batista at Hell in a Cell. At Survivor Series, both Jericho and Big Show took part in a triple threat match for the World Heavyweight Championship, but The Undertaker successfully retained the title. At TLC: Tables, Ladders & Chairs, Jeri-Show lost the titles to D-Generation X in a Tables, Ladders and Chairs match. As a member of the SmackDown brand, Jericho could only appear on Raw as a champion and DX intentionally disqualified themselves in a rematch to force Jericho off the show. Eventually the teams had a match with a definitive finish, though DX still won, signaling the end of Jeri-Show.
At the 2010 Royal Rumble, Jericho was eliminated by the returning Edge, his former tag team partner, who went on to win the match. At Elimination Chamber, Jericho won the World Heavyweight Championship in an Elimination Chamber match, defeating The Undertaker, John Morrison, Rey Mysterio, CM Punk and R-Truth following interference from Shawn Michaels. The next night on Raw, Edge used his Royal Rumble win to challenge Jericho for the World Heavyweight Championship at WrestleMania XXVI. Jericho defeated Edge at WrestleMania after using the title belt, but on the April 2 episode of SmackDown, Jack Swagger cashed in his Money in the Bank contract and defeated Jericho for the championship, after he had been speared by Edge. Swagger then retained the championship in a triple threat match against Jericho and Edge on the April 16 episode of SmackDown. After the match, Jericho attacked Edge, injuring his ankle. Edge defeated Jericho in a steel cage match at Extreme Rules to end the feud.
Jericho was drafted to the Raw brand in April's 2010 WWE draft. He formed a brief tag team with The Miz and unsuccessfully challenged The Hart Dynasty for the Unified Tag Team Championship at Over the Limit. A month later, Jericho lost to Evan Bourne at Fatal 4-Way, and the following night won a rematch where he put his career on the line. On the July 19 episode of Raw, after being assaulted by The Nexus, Jericho teamed with rivals Edge, John Morrison, R-Truth, Daniel Bryan and Bret Hart in a team led by John Cena to face The Nexus at SummerSlam. Jericho and Cena bickered over leadership of the team, which led to him and Edge attacking Cena during the SummerSlam match that they won.
Jericho was punished for not showing solidarity against Nexus, when he was removed from a six-pack challenge for Sheamus' WWE Championship at Night of Champions. Although he re-earned his place in the match after defeating The Hart Dynasty in a handicap steel cage match, he was the first man eliminated from the match at Night of Champions. On the September 27 episode of Raw, Jericho faced Randy Orton who punted him in the head. This was used to explain Jericho's departure from the company. The match ended in a draw due to the no contest nature of the finish.
Beginning in November 2011, WWE aired cryptic vignettes that promoted a wrestler's return on the January 2, 2012 episode of Raw. On his return, after hyping the crowd and relishing their cheers for a prolonged period, Jericho left without verbally addressing his return. After exhibiting similar odd behavior in the proceeding two weeks, Jericho spoke on the January 23 episode of Raw to say, "This Sunday at the Royal Rumble, it is going to be the end of the world as you know it", but in the Royal Rumble match, he was eliminated last, by Sheamus. On the January 30 episode of Raw, Jericho began a feud with WWE Champion CM Punk after attacking him during his match with Daniel Bryan. He explained his actions by claiming other wrestlers in WWE were imitating him and named CM Punk as the worst offender.
At Elimination Chamber, Jericho participated in the Elimination Chamber match for the WWE Championship, entering last and eliminating Dolph Ziggler and Kofi Kingston before being attacked by Punk, which injured him and removed him from the match without being eliminated. The following night on Raw, Jericho won a ten-man battle royal to become the number one contender for Punk's WWE Championship at WrestleMania XXVIII. In a bid to psychologically unsettle Punk, Jericho revealed that Punk's father was an alcoholic and Punk's sister was a drug addict, which contradicted Punk's straight edge philosophy; Jericho vowed to make Punk turn to alcohol by winning Punk's title from him. At WrestleMania, a stipulation was added that Punk would lose his WWE Championship if he was disqualified. During the match, Jericho unsuccessfully tried to taunt Punk into disqualifying himself, and Punk won the match.
Jericho continued his feud with Punk in the weeks that followed by attacking and dousing him with alcohol after his matches. At Extreme Rules, Jericho failed again to capture the WWE Championship from Punk in a Chicago Street Fight.
Jericho faced Randy Orton, Alberto Del Rio and Sheamus in a fatal four-way match for the World Heavyweight Championship at Over the Limit, where Sheamus retained his title. Jericho returned on the June 25 episode of Raw. At Money in the Bank, Jericho participated in the WWE Championship Money in the Bank ladder match, but failed to win as John Cena won. The following night on Raw, Jericho confronted newly crowned Mr. Money in the Bank, Dolph Ziggler, who claimed that Jericho had lost his touch. Jericho attacked Ziggler with a Codebreaker, thus turning face in the process. At SummerSlam, Jericho defeated Ziggler. The following night on Raw, Ziggler defeated Jericho in a rematch and, as a result, Ziggler retained his Money in the Bank contract and Jericho's WWE contract was terminated as per a pre match stipulation put in place by Raw General Manager AJ Lee.
On January 27, 2013, Jericho returned after a five-month hiatus entering the Royal Rumble match as the second entrant. Jericho lasted over 47 minutes before being eliminated by Dolph Ziggler. The following night on Raw, Jericho later revealed to Ziggler that due to a managerial change on Raw, he had been rehired by Vickie Guerrero, resuming his feud with Ziggler. Guerrero then paired the two in a match against WWE Tag Team Champions Team Hell No (Daniel Bryan and Kane). The match ended with Ziggler being pinned by Kane after Jericho framed him for pushing Kane. After beating Daniel Bryan on the February 11 episode of Raw, Jericho qualified for the Elimination Chamber match at Elimination Chamber (in which the winner would go on to be the number one contender for the World Heavyweight Championship at WrestleMania 29), where he was the fourth man eliminated. On the March 11 episode of Raw, Jericho faced The Miz in a number one contenders match for Wade Barrett's WWE Intercontinental Championship, but the match was ruled a no contest after Barrett interfered and attacked both men. Both men then faced Barrett the following week on Raw, where he retained his title. Earlier in the episode, Jericho had a run-in with Fandango which led to Fandango costing him his match with Jack Swagger and attacking him four days later on SmackDown. At WrestleMania 29, Jericho was defeated by Fandango. They continued their feud in the following weeks, until Jericho defeated Fandango at Extreme Rules. He then faced the returning CM Punk at Payback, where he was defeated. Jericho then began feuding with Ryback, which led to a singles match on July 14 at Money in the Bank, where Ryback emerged victorious. On the July 19 episode of SmackDown, Jericho unsuccessfully challenged Curtis Axel for the WWE Intercontinental Championship and was afterwards attacked by Ryback. This was done to write Jericho off television as he was taking a temporary hiatus.
After an eleven-month hiatus, Jericho returned on the June 30, 2014 episode of Raw, attacking The Miz, who had also returned minutes earlier. The Wyatt Family then interrupted and ultimately attacked Jericho. Jericho faced Bray Wyatt at Battleground in a winning effort. At SummerSlam, with Wyatt Family members Luke Harper and Erick Rowan banned from ringside, Wyatt picked up the victory. On the September 8 episode of Raw, Jericho lost to Wyatt in a steel cage match, ending the feud. Jericho then feuded with Randy Orton, whom had attacked him the week before after his match against Wyatt in the trainers room. Orton defeated him at Night of Champions. Throughout the rest of October and November, Jericho wrestled exclusively at live events, defeating Bray Wyatt. Jericho returned to WWE television in December as the guest general manager of the December 15 episode of Raw. Jericho booked himself in a street fight against Paul Heyman in the main event, which led to the return of Brock Lesnar. Before the match could begin, Lesnar attacked Jericho with an F-5.
In January 2015, Jericho revealed that he signed an exclusive WWE contract, under which he would compete at 16 house shows only. He later signed a similar contract once the former expired and competed at house shows throughout the rest of 2015. During this time he wrestled against the likes of Luke Harper, Kevin Owens and King Barrett in winning efforts. In May 2015, Jericho was one of the hosts of Tough Enough's sixth season. Jericho also hosted two Live! With Chris Jericho specials on the WWE Network during 2015; his guests were John Cena and Stephanie McMahon. Jericho made his televised return at The Beast in the East, defeating Neville. At Night of Champions, Jericho was revealed as the mystery partner of Roman Reigns and Dean Ambrose, facing The Wyatt Family in a losing effort. On October 3, Jericho unsuccessfully challenged Kevin Owens for the WWE Intercontinental Championship at Live from Madison Square Garden.
On the January 4, 2016 episode of Raw, Jericho returned to in-ring competition full-time and confronted The New Day. At the 2016 Royal Rumble, Jericho entered as the sixth entrant, lasting over 50 minutes, before being eliminated by Dean Ambrose. On the January 25 episode of Raw, Jericho faced the recently debuted AJ Styles in a losing effort. Following the match, after initial hesitation by Jericho, the pair shook hands. On the February 11 episode of SmackDown, Jericho defeated Styles. At Fastlane, Styles was victorious in a third match between the pair. On the February 22 episode of Raw, Jericho and Styles formed a tag team, dubbed Y2AJ. Following their loss against New Day on the March 7 episode of Raw, Jericho attacked Styles, ending their alliance, claiming that he was sick of the fans chanting for Styles instead of him, turning heel in the process. Their feud culminated at WrestleMania 32, where Jericho defeated Styles. However, on the April 4 episode of Raw, Jericho competed in a fatal-four-way match against Styles, Kevin Owens and Cesaro to determine the number one contender for the WWE World Heavyweight Championship in a losing effort after being pinned by Styles, ending their feud.
The following week on Raw, Dean Ambrose interrupted The Highlight Reel, handing Jericho a note from Shane McMahon replacing the show with The Ambrose Asylum, igniting a feud between the two. During this time, Jericho tweaked his gimmick. He became arrogant and childish while wearing expensive scarfs and calling everyone who appeased him "stupid idiots". At Payback, Jericho faced Ambrose in a losing effort. After attacking one another and Ambrose destroying Jericho's light-up ring jacket, Jericho was challenged by Ambrose to an Asylum match at Extreme Rules, where Ambrose again defeated Jericho after Jericho was thrown in a pile of thumbtacks. On the May 23 episode of Raw, Jericho defeated Apollo Crews to qualify for the Money in the Bank ladder match at the Money in the Bank pay-per-view, where Jericho was unsuccessful as the match was won by Ambrose. On July 19 at the 2016 WWE draft, Jericho was drafted to the Raw brand. At Battleground on July 24, Jericho hosted a Highlight Reel segment with the returning Randy Orton, where he took an RKO from Orton after he insulted him. The next night on Raw, Jericho competed in a fatal four-way match to determine the number one contender for the newly created WWE Universal Championship at SummerSlam, but he was unsuccessful, as Roman Reigns won the match.
Jericho then entered a feud with Enzo and Cass and on the August 1 episode of Raw, he teamed with Charlotte to defeat Enzo Amore and then-WWE Women's Champion Sasha Banks in a mixed tag team match, after which Big Cass made the save as Jericho continued the assault on Amore. The following week on Raw, Jericho allied with Kevin Owens and later defeated Amore via disqualification when Cass interfered. This led to a tag team match at SummerSlam, where Jericho and Owens defeated Enzo and Cass. On the August 22 episode of Raw, Jericho interfered in Owens's match against Neville, allowing him to qualify for the fatal four-way match to determine the new WWE Universal Champion on the August 29 episode of Raw, which Owens won.
On the September 12 episode of Raw, Jericho hosted an episode of The Highlight Reel with Sami Zayn as his guest, who questioned his alliance with Owens, resulting in Jericho defending Owens and attacking Zayn. On the September 19 episode of Raw, as a result of feeling that he was being treated unjustly by General Manager Mick Foley, as well as other wrestlers beginning to annoy him, Jericho began a list called "The List of Jericho", where he wrote down the name of the person that bothered him and why. If someone annoyed Jericho, he would ask "you know what happens?" before shouting "you just made the list!" and writing the person's name down. At Clash of Champions on September 25, Jericho defeated Zayn and assisted Owens in his victory against Seth Rollins. At Hell in a Cell on October 30, Jericho aided Owens to retain against Rollins after Owens sprayed a fire extinguisher at the referee, allowing Jericho to enter the cell.
Jericho teamed with Owens, Braun Strowman, Roman Reigns, and Seth Rollins as part of Team Raw at Survivor Series on November 20, in a losing effort. The next night on Raw, despite being banned from ringside, Jericho showed up in a Sin Cara mask and attacked Rollins, in another successful title defense for Owens. The following week on Raw, tensions between Jericho and Owens arose after both said that they did not need each other anymore, and Jericho was later attacked by Rollins in the parking lot. At Roadblock: End of the Line on December 18, Jericho lost to Rollins after Owens failed in his attempt to help him. Later that night, Jericho intentionally attacked Owens to prevent Reigns from winning the title. After both Jericho and Owens failed to win the WWE United States Championship from Reigns in multiple singles matches in late 2016, Jericho pinned Reigns in a handicap match also involving Owens on the January 9 episode of Raw to win the WWE United States Championship. Thus, Jericho won his first championship in nearly seven years and also become Grand Slam winner under the current format. Due to interfering multiple times in Owens's matches, Jericho was suspended above the ring in a shark proof cage during Reigns's rematch at the Royal Rumble pay-per-view event. Owens nonetheless retained the championship after Braun Strowman, taking advantage of the added no disqualification stipulation, interfered. Also at the event, Jericho entered as the second entrant in the Royal Rumble match, lasting over an hour (thus breaking the record with a cumulative time of over five hours) and being the third to last before being eliminated by Reigns.
In February, tensions grew between Jericho and Owens after Jericho accepted a Universal Championship challenge from Goldberg on Owens's behalf, much to the latter's dismay. On the February 13 episode of Raw, Jericho held a "Festival of Friendship" for Owens, who was not impressed and viciously attacked Jericho, ending their alliance. Jericho returned at Fastlane on March 5, distracting Owens during his match with Goldberg and causing Owens to lose the Universal Championship, turning face again in the process. This led to a match between Jericho and Owens for WrestleMania 33 on April 2, with Jericho's United States Championship on the line. At the event, Jericho was defeated. At Payback on April 30, Jericho defeated Owens to regain the title, but lost it back to him two nights later on SmackDown. Following the match, Owens attacked Jericho, who was carried out on a stretcher. Thus, Jericho was written off television. Jericho made a surprise return at a house show in Singapore on June 28, where he lost to Hideo Itami.
On the July 25 episode of SmackDown, Jericho made his televised return, interrupting an altercation between Kevin Owens and AJ Styles to get his rematch for Owens's WWE United States Championship. Later that night, Jericho participated in a triple threat match against Owens and Styles for the title in which Jericho was pinned by Styles.
On January 22, 2018 during Raw 25 Years, Jericho appeared backstage in a segment with Elias, putting him on The List of Jericho. At the Greatest Royal Rumble, Jericho was the last entrant in the 50-man Royal Rumble match, eliminating Shelton Benjamin before being eliminated by Braun Strowman. This event marked Jericho's final appearance with WWE.