World Championship Wrestling
Adams and Clark first joined together as a duo in April 2000 in World Championship Wrestling (WCW). Upon joining together as a tag team, Kronik (originally spelled Kronic) assisted Vince Russo in his vision of a clean sweep for his New Blood alliance at the 2000 Spring Stampede pay-per-view. Adams and Clark interfered in the WCW World Tag Team Championship match, allowing the team of Buff Bagwell and Shane Douglas to win the title.
While in WCW, Kronik moved between babyface and heel roles several times - holding the WCW Tag Team Championship twice. In the final months of WCW, Kronik became hired muscle, adopting the catch phrase "breaking necks and cashing checks", similar to the WWE's popular APA tag team. Their contracts were not picked up by WWF when WCW was sold by Time Warner.
World Wrestling Federation
In September 2001, Brian Adams and Bryan Clark each made their re-debut as a World Wrestling Federation (WWF) tag team. Recruited by Stevie Richards, Kronik was called in to settle past differences Richards had with The Undertaker, stemming from the disbanding of Richards' stable, "Right to Censor" earlier that year. Kronik wrestled their first tag team match defeating Kaientai on the September 20, 2001 edition of SmackDown and their last tag team match for WWF a few days later at Unforgiven, losing to then WCW Tag Team Champions Kane and The Undertaker. Due to their poor performance, Adams and Clark were dropped from the WWF roster soon after and assigned to a WWF developmental territory - to work on their in-ring skills. Unwilling to comply, Clark was released from his WWF contract while Adams reported to the Heartland Wrestling Association in Cincinnati, Ohio. In November 2001, Brian Adams was released from his WWF contract.
- Double-team finishing moves
- High Times (Double chokeslam)
- Total Meltdown (Powerbomb (Clark) / Diving clothesline (Adams) combination)
- Adams' finishing moves