Sid Eudy, a six-time world champion professional wrestler in the USWA, WWF (now WWE) and WCW promotions, has died at the age of 63 after a years-long battle with cancer, his son Gunnar announced on social media. He wrestled under ring names such as Sid Vicious in WCW and Sid Justice and Sycho Sid in the WWF.

Eudy was one of the top wrestling stars of the 1990s, competing in the ring with the likes of Hulk Hogan, Ric Flair, Shawn Michaels and the Undertaker. One of his first big matches came in 1992, when he faced Hogan in a headlining match at WrestleMania VIII that ended in a disqualification.

Over the course of the decade, the athlete moved between Vince McMahon’s World Wrestling Federation, Ted Turner’s World Championship Wrestling and independent promotions such as the United States Wrestling Association in Memphis, where he feuded with longtime rival Jerry “The King” Lawler for the USWA heavyweight title in 1994.

Following this run, Eudy began his most well-known career in wrestling in 1995 in the WWF, where he initially served as Shawn Michaels’ bodyguard before joining the villainous Million Dollar Corporation faction led by longtime wrestling villain Ted “The Million Dollar Man” DiBiase. As part of this group, Eudy challenged future WWE Hall of Famer Kevin Nash – who wrestled under the ring name Diesel – for the world title, but was unsuccessful.

Eudy’s rise to the top of the WWF didn’t come until 1996, when he developed the character Sycho Sid, an unstable madman who stared into the distance and was prone to outbursts of anger. Sycho Sid fought Shawn Michaels for the WWF Championship, eventually winning it for the first time at Survivor Series in Madison Square Garden.

Sycho Sid continued to fight for the title against Michaels and fellow top star Bret Hart over the next few months. Finally, in what was arguably his most famous match, Sid lost the WWF title to the Undertaker in the main event of WrestleMania 13. It was a match that would become the sixth of Undertaker’s 21 consecutive victories in the WWF, now the flagship show of the WWE.

After this match, Eudy left the WWF due to a neck injury that required surgery. He returned to television in WCW, where he won the promotion’s World Heavyweight Championship during feuds with Hogan, Nash and Chris Benoit before suffering a catastrophic leg injury in a televised match that left him nearly unable to walk.

After years of rehabilitation, Eudy returned to the ring in 2004 and continued to wrestle on the independent circuit throughout the 2000s. He returned to WWE for the first time in 15 years in 2012 on the 1,000th episode of Monday Night Raw. His last match was in 2017 in Ontario, Canada.

Eudy leaves behind his wife Sabrina and his sons Frank and Gunnar.