Champion debuted in World Championship Wrestling (WCW) by competing in the 1987 Jim Crockett Sr. Memorial Cup Tag Team Tournament, teaming with Denny Brown. The team defeated Bill and Randy Mulkey in the first round, but were defeated by Giant Baba and Isao Takagi in the second round. In WCW, he also teamed with Sean Royal to form the New Breed, and worked a feud with The Rock 'n' Roll Express, but the storyline was abruptly ended when the New Breed were involved in a car accident that meant Chris Champion could not wrestle for several months. When he returned, he wore a cast on his arm, decorated with computer parts, claiming it was a "future cast". The car crash and return turned the New Breed face and they began a feud with The Midnight Express (Stan Lane and Bobby Eaton). The feud did not last long as Sean Royal retired a short time later, ending the New Breed team. After the New Breed broke up, Champion participated in the 1988 Jim Crockett Sr. Memorial Cup Tag Team Tournament, teaming with Mark Starr. The team defeated the Twin Devils in the opening round, but were defeated by the Powers of Pain in the second round. Following the Crockett Cup, Champion briefly competed as The Karate Kid, but was soon gone from the company.
In June 1993, Champion returned to World Championship Wrestling (WCW), where he was given the ring persona Yoshi Kwan, and was managed by Harley Race. The Yoshi Kwan character was billed as being from Asia and wore makeup to make him appear to be Asian. Kwan scored victories over Brad Armstrong, Marcus Alexander Bagwell, 2 Cold Scorpio and others while managed by Race. Kwan feuded with Cactus Jack, with the two facing off in a singles match at WCW's 1993 Fall Brawl which Cactus Jack won. Kwan was set to face Ricky Steamboat at Halloween Havoc, but a knee injury prevented him from wrestling and he was soon out of WCW.
On August 22, 2018, Champion passed away.