Benoit first came to World Championship Wrestling in June 1992, teaming up with fellow Canadian wrestler Biff Wellington for the WCW World Tag Team Championship tournament; they were defeated by Brian Pillman and Jushin Thunder Liger in the first round at Clash of the Champions XIX.
He did not return to WCW until January 1993 at Clash of the Champions XXII, defeating Brad Armstrong. A month later, at SuperBrawl III, he lost to 2 Cold Scorpio, getting pinned with only three seconds left in the 20-minute time limit. At the same time, he formed a tag team with Bobby Eaton. After he and Eaton lost to Scorpio and Marcus Bagwell at Slamboree, Benoit left the company.
In 1994, Benoit began working with Extreme Championship Wrestling (ECW). He was booked as a dominant wrestler there, gaining notoriety as the "Crippler" after he put Rocco Rock out.
At November to Remember, Benoit accidentally broke Sabu's neck within the opening seconds of the match. From that point until his departure from ECW, he was known as "Crippler Benoit".
Benoit and Dean Malenko won the ECW World Tag Team Championship from Sabu and The Tazmaniac in February 1995, Benoit's first title. After winning, they were initiated into the Triple Threat stable, led by ECW World Heavyweight Champion Shane Douglas, as Douglas's attempt to recreate the Four Horsemen, as the three-man contingency held all three of the ECW championships at the time (Malenko also held the ECW World Television Championship at the time). The team lost the championship to The Public Enemy that April at ECW Three Way Dance. Benoit spent some time in ECW feuding with The Steiner Brothers and rekindling the feud with 2 Cold Scorpio. He left ECW soon afterwards.
Benoit re-signed with WCW in late 1995. He started out as a member of the cruiserweight division, having lengthy matches on almost every single broadcast. After impressing Ric Flair, he was approached by him to become a member of the reformed Four Horsemen in 1995, alongside Flair, Arn Anderson, and Brian Pillman; he was introduced by Pillman as a gruff, no-nonsense heel similar to his ECW persona, "The Crippler". He was brought in to add a new dynamic for Anderson and Flair's tormenting of Hulk Hogan and Randy Savage in their "Alliance to End Hulkamania", which saw the Horsemen team up with The Dungeon of Doom, but that alliance ended with Dungeon leader Kevin Sullivan feuding with Pillman. When Pillman abruptly left the company, Benoit was placed into his ongoing feud with Sullivan. This came to fruition through a dissension between the two in a tag team match with the two reluctantly teaming with each other against The Public Enemy, and Benoit being attacked by Sullivan at Slamboree. This led to the two having violent confrontations at pay-per-views, which led to Benoit having an affair with Sullivan's wife and onscreen valet, Nancy.
In 1998, Benoit had a long feud with Booker T. They fought over the WCW World Television Championship until Booker lost the title to Fit Finlay. Booker won a "Best-of-Seven" series which was held between the two to determine a number one contender. Benoit went up 3 to 1 before Booker caught up, forcing the seventh and final match on Monday Nitro. During the match, Bret Hart interjected himself, interfering on behalf of Benoit in an attempt to get him to join the New World Order. Benoit refused to win that way and told the referee what happened, getting himself disqualified. Booker refused that victory, instead opting for an eighth match at the Great American Bash to see who would fight Finlay later that night. Booker won the final match and went on to beat Finlay for the title. This feud significantly elevated both men's careers as singles competitors, and both remained at the top of the midcard afterward.
In 1999, Benoit teamed with Dean Malenko once again and defeated Curt Hennig and Barry Windham to win the WCW World Tag Team Championship. This led to a reformation of the Four Horsemen with the tag team champions, Anderson, and Steve "Mongo" McMichael. The two hunted after the tag team championship for several months, feuding with teams like Raven and Perry Saturn or Billy Kidman and Rey Mysterio, Jr.
After a falling out with Anderson and McMichael, Benoit and Malenko left the Horsemen; he won the WCW United States Heavyweight Championship before bringing together Malenko, Perry Saturn, and Shane Douglas to form "The Revolution".
The Revolution was a heel stable of younger wrestlers who felt slighted by WCW management, believing they never gave them the chance to be stars, pushing older, more established wrestlers instead, despite their then-current questionable worthiness of their pushes. This led to the Revolution seceding from WCW, and forming their own nation, complete with a flag. This led to some friction being created between Benoit and leader, Douglas, who called into question Benoit's heart in the group, causing Benoit to quit the group, thus turning face, and having his own crusade against the top stars, winning the Television Title one more time and the United States Title from Jeff Jarrett in a ladder match. In October 1999 on Nitro in Kansas City, Missouri, Benoit wrestled Bret Hart as a tribute to Owen Hart, who had recently died due to an equipment malfunction. Hart defeated Benoit by submission, and the two received a standing ovation, and an embrace from guest ring announcer, Harley Race.
In January 2000, Benoit won the vacant WCW World Heavyweight Championship by defeating Sid Vicious at Souled Out. Benoit left the company the next day alongside his friends Eddie Guerrero, Dean Malenko, and Perry Saturn, forfeiting his title in the process.
Along with Guerrero, Saturn, and Malenko, Benoit debuted in the World Wrestling Federation (WWF) as a stable that became known as The Radicalz. After losing their "tryout matches" upon entry, The Radicalz aligned themselves with WWF Champion Triple H and became a heel faction. Benoit quickly won his first title in the WWF just over a month later at WrestleMania 2000, pinning Chris Jericho in a triple threat match to win Kurt Angle's Intercontinental Championship. It was also in this time period that Benoit wrestled in his first WWF pay-per-view main events, challenging The Rock for the WWF Championship at Fully Loaded in July and as part of a fatal four way title match at Unforgiven in September. On both occasions, Benoit appeared to have won the title, only to have the decision reversed by then-WWF commissioner Mick Foley due to cheating on Benoit's part. Benoit simultaneously entered into a long-running feud with Jericho for the Intercontinental title, with the two meeting at Backlash, Judgment Day and SummerSlam; Benoit winning all three matches. The feud finally culminated in Jericho defeating Benoit in a ladder match at the Royal Rumble in January 2001. Benoit won the Intercontinental title three times between April 2000 and January 2001.
In early 2001, Benoit broke away from The Radicalz (who had recently reformed three months earlier) and turned face, feuding first with his former stablemates and then with Kurt Angle, whom he wrestled and lost to at WrestleMania X-Seven. He gained some amount of revenge after beating Angle in a "Ultimiate Submission" match at Backlash. The feud continued after Benoit stole Angle's cherished Olympic Gold Medal. This culminated in a match at Judgment Day, where Angle won a two out of three falls match with the help of Edge and Christian. In response, Benoit teamed up with his former rival Jericho to defeat Edge and Christian in that night's tag team turmoil match.
The next night on Raw is War, Benoit and Jericho defeated WWF Tag Team Champions Stone Cold Steve Austin and Triple H for their title. The pair used the win as a springboard to challenge Austin for his WWF Championship. Benoit got two title matches the following week, first losing in a manner similar to the Montreal Screwjob in Calgary and then losing in a close match in Benoit's hometown of Edmonton. However, Benoit suffered a neck injury in a four-way TLC match that required surgery. Despite this, he continued to wrestle until the King of the Ring, where he was pinned in a triple threat match versus Austin and Jericho. Benoit missed the next year due to his neck injury, missing the entire Invasion storyline.
During the first WWE draft, he was the third wrestler picked by Vince McMahon to be part of the new SmackDown! roster, although still on the injured list. However, when he returned, he did so as a member of the Raw roster. On his first night back, he turned heel again and aligned himself with Eddie Guerrero, where he feuded with Stone Cold Steve Austin briefly. He and Guerrero were then moved to SmackDown during a storyline "open season" on wrestler contracts, with Benoit taking his newly won Intercontinental championship with him. Rob Van Dam defeated Benoit at SummerSlam and returned the title to Raw.
After returning to SmackDown!, he embarked on a feud with Kurt Angle in which he defeated him at Unforgiven. On October 20, 2002, at No Mercy, he teamed with Angle to win a tournament to crown the first-ever WWE Tag Team Champions. They became tweeners after betraying Los Guerreros. At Rebellion, Benoit and Angle made their successful title defense, defeating Los Guerreros. They lost the championships to Edge and Rey Mysterio on the November 7 episode of SmackDown in a two-out-of-three falls match. They received a rematch at Survivor Series in a triple threat elimination match against Edge and Mysterio and Los Guerreros, but failed to win the titles after being the first team eliminated. The team split up shortly afterward and Benoit became a face.
Angle won his third WWE Championship from Big Show at Armageddon, and Benoit faced him for the title at the 2003 Royal Rumble. Although Benoit lost the match, he received a standing ovation for his efforts. Benoit returned to the tag team ranks, teaming with the returning Rhyno.
At WrestleMania XIX, the WWE Tag Team Champions, Team Angle (Charlie Haas and Shelton Benjamin), put their titles on the line against Benoit and his partner Rhyno and Los Guerreros in a triple threat tag team match. Team Angle retained when Benjamin pinned Chavo. In April 2003, following WrestleMania XIX, Benoit then feuded with John Cena and The Full Blooded Italians, teaming with Rhyno occasionally.
In June 2003, the WCW United States Championship was reactivated and renamed the WWE United States Championship, and Benoit participated in the tournament for the title. He lost in the final match to Eddie Guerrero at Vengeance. The two feuded over the title for the next month, and Benoit went on to defeat the likes of A-Train, Big Show, and eliminating Brock Lesnar by submission at Survivor Series as part of a Survivor Series elimination tag team match between Team Angle against Team Lesnar. As a result, Benoit challenged Lesnar for the WWE Championship on the December 4 episode of SmackDown, but lost after passing out to Lesnar's debuting Brock Lock submission hold. General Manager Paul Heyman had a vendetta against Benoit along with Lesnar, preventing him from gaining a shot at Lesnar's WWE title.
When Benoit won a qualifying match for the 2004 Royal Rumble against the Full Blooded Italians in a handicap match with John Cena, Heyman named him as the number one entry. On January 25, 2004, he won the Royal Rumble by last eliminating Big Show, and thus earned a world title shot at WrestleMania XX. He became only the second WWE performer to win the Royal Rumble as the number one entrant along with Shawn Michaels. With Benoit being on the SmackDown! brand at the time, it was assumed that he was going to compete for his brand's championship, the WWE Championship. However, Benoit exploited a "loophole" in the rules and was traded on Raw the following night to announce he will instead challenge World Heavyweight Champion Triple H at WrestleMania. Though the match was originally intended to be a one-on-one match, Shawn Michaels, whose Last Man Standing match against Triple H at the Royal Rumble for the World Heavyweight Championship ended in a draw, thought that he deserved to be in the main event. When it was time for Benoit to sign the contract putting himself in the main event, Michaels superkicked him and signed his name on the contract, which eventually resulted in a Triple Threat match between Michaels, Benoit, and the champion, Triple H.
On March 14, 2004, at WrestleMania XX, Benoit won the World Heavyweight Championship by forcing Triple H to tap out to his signature submission move, the Crippler Crossface. The match marked the first time the main event of a WrestleMania ended in submission. After the match, Benoit celebrated his win with then-reigning WWE Champion Eddie Guerrero. The rematch was held at Backlash in Benoit's hometown of Edmonton. It was Michaels who ended up submitting to Benoit's Sharpshooter, allowing Benoit to retain his title. The next night in Calgary, he and Edge won the World Tag Team Titles from Batista and Ric Flair, making Benoit a double champion.
The three months following his victory at Backlash, Benoit and Edge engaged in a rivalry with La Résistance for the World Tag Team Championship, which saw a series of matches, while simultaneously having confrontations with Kane over the World Title. Benoit wrestled in two matches at Bad Blood in his respective rivalries; he and Edge failed to regain their World Tag Team title while he successfully defended the World Title against Kane. A month later at Vengeance, Benoit retained the title against Triple H.
On August 15, 2004, Benoit was defeated by Randy Orton for the World Heavyweight Championship at SummerSlam. Benoit then teamed with William Regal at Unforgiven against Ric Flair and Batista in a winning effort. Benoit then feuded with Edge (who had turned into an arrogant and conceited heel), leading to Taboo Tuesday where Benoit, Edge, and Shawn Michaels were all put into a poll to see who would face Triple H for the World Heavyweight title that night. Michaels received the most votes and as a result, Edge and Benoit were forced to team up to face the then-Tag Team Champions La Résistance, in the same night. However, Edge deserted Benoit during the match and Benoit was forced to take on both members of La Résistance by himself. He still managed to win the World Tag Team Title. At Survivor Series, Benoit sided with Randy Orton's team while Edge teamed with Triple H's team, and while Edge was able to pin Benoit after a Pedigree, Orton's team won.
The Benoit-Edge feud ended at New Year's Revolution. The feud stopped abruptly, as Edge feuded with Shawn Michaels, and Benoit entered the Royal Rumble. The two then continued to have matches in the following weeks until the two of them, Chris Jericho, Shelton Benjamin, Kane, and Christian were placed in the Money in the Bank ladder match at WrestleMania 21. Edge won the match by knocking Benoit off of a ladder and smashing his arm with the ladder. The feud finally culminated in a Last Man Standing match at Backlash, which Edge won with a brick shot to the back of Benoit's head.
On June 9, Benoit was drafted back to SmackDown! after being the first man selected by the brand in the 2005 Draft Lottery and participated in an ECW-style revolution against the SmackDown! heels. Benoit appeared at One Night Stand, defeating Eddie Guerrero.
On July 24 at The Great American Bash, Benoit failed to win the WWE United States Championship from Orlando Jordan, but won a rematch at SummerSlam in 25 seconds. Benoit then won three consecutive matches against Jordan in less than a minute. Benoit later wrestled Booker T in friendly competitions, until Booker and his wife, Sharmell, cheated Benoit out of the United States title in October.
On November 13, 2005, Eddie Guerrero was found dead in his hotel room. The following night, Raw held a Guerrero tribute show hosted by both Raw and SmackDown! wrestlers. Benoit was devastated at the loss of his best friend and was very emotional during a series of video testimonials, eventually breaking down on camera. The same week on SmackDown! (taped on the same night as Raw), Benoit defeated Triple H in a tribute match to his fallen friend. Following the contest, Benoit, Helmsley, and Dean Malenko all assembled in the ring and pointed to the sky in salute of Guerrero.
After controversy surrounding a United States Championship defense against Booker T, Theodore Long set up a "Best of Seven" series between the two. Booker T won three times in a row, due largely to his wife's interference, and Benoit faced elimination in the series. Benoit won the fourth match to stay alive at Armageddon, but after the match, Booker suffered a legitimate groin injury, and Randy Orton was chosen as a stand-in. Benoit defeated Orton twice by disqualification. However, in the seventh and final match, Orton defeated Benoit with the help of Booker T, Sharmell, and Orlando Jordan, and Booker captured the US title. Benoit feuded with Orton for a short time, before defeating Orton in a No Holds Barred match on the January 27 episode of SmackDown! via the Crippler Crossface. Benoit was given one last chance at the US title at No Way Out and won it by making Booker submit to the Crippler Crossface, ending the feud.
The next week on SmackDown!, Benoit kayfabe broke John Bradshaw Layfield's (JBL) hand. A match was set up for the two at WrestleMania 22 for Benoit's title, and for the next several weeks, they attacked each other. At WrestleMania, JBL won the match with an illegal cradle to win the title. Benoit used his rematch clause two weeks later in a steel cage match on SmackDown!, but JBL again won with illegal tactics. Benoit entered the King of the Ring tournament, only to be defeated by Finlay in the opening round, after Finlay struck Benoit's neck with a chair and delivered a Celtic Cross. At Judgment Day, Benoit gained some revenge by defeating Finlay with the Crippler Crossface in a grudge match. On the following episode of SmackDown!, Mark Henry brutalized Benoit during their match, giving him (kayfabe) back and rib injuries and causing him to bleed from his mouth. Benoit then took a sabbatical to heal nagging shoulder injuries.
On October 8, Benoit made his return at No Mercy, defeating William Regal in a surprise match. Later that week, he won his fifth United States Championship from Mr. Kennedy. Benoit then engaged in a feud with Chavo and Vickie Guerrero. He wanted answers from the Guerreros for their rash behaviour towards Rey Mysterio, but was avoided by the two and was eventually assaulted. This led to the two embarking on a feud with title implications at the coming two pay per views. The feud culminated with one last title match as a no disqualification match, which was also won by Benoit. Later, Montel Vontavious Porter (MVP), who claimed that he was the best man to hold the US title, challenged Benoit for the title at WrestleMania 23, where Benoit retained. Their rivalry continued with similar results again at Backlash. At Judgment Day, however, MVP gained the upper hand and won the title in a two out of three falls match, thus ending the feud.
On the June 11 episode of Raw, Benoit was drafted from SmackDown! to ECW as part of the 2007 WWE draft. On June 19, Benoit wrestled his final match, defeating Elijah Burke in a match to determine who would compete for the vacated ECW World Championship at Vengeance on June 24. When he failed to show up for the pay-per-view, viewers were informed that he was unable to compete due to a "family emergency" and he was replaced in the title match by Johnny Nitro, who won the match and became ECW World Champion.
On June 24, 2007, Benoit passed away. WWE cancelled the scheduled three-hour long live Raw show on June 25 and replaced the broadcast version with a three-hour tribute to his life and career, featuring his past matches, and comments from wrestlers and announcers. However, once the details his death became apparent, WWE quickly and quietly began distancing itself from the wrestler by removing merchandise and no longer mentioning him. The June 26 episode of ECW began with Vince McMahon addressing the television audience about the circumstances and announcing that there would be no mention of Benoit that night other than his comments.