Bam Bam Bigelow
In September 1998, Fullington joined World Championship Wrestling (WCW), signing a 3-year deal believed to be worth $200,000 annually according to Dave Meltzer. He first appeared in vignettes promoting Raven as a spoiled rich kid and Fullington as his preppy neighbor. The original plan to debut under this gimmick were scrapped. He later debuted under his longtime nickname, Hak (The Sandman name was trademarked by ECW) when he called out Bam Bam Bigelow and challenged him to a Hardcore match on "Monday Nitro". During the match he was defeated by Bigelow and was not named on screen during the entire segment. In his short time there, Hak was mostly involved in angles featuring fellow ECW alumni Raven, Bigelow and Raven's storyline sister Chastity, with whom he developed an on-screen relationship after she turned on Raven. His presence also helped to bolster WCW's fledgling hardcore division. WCW started promoting hardcore wrestling within their product through utilizing wrestlers like Hak and Bam Bam Bigelow. At Uncensored 1999, Hak defeated Bam Bam Bigelow and Raven in a Falls Count Anywhere Triple Threat match. At Spring Stampede 1999, Hak lost to Bam Bam Bigelow in a Hardcore match. At The Great American Bash 1999, Hak defeated Brian Knobs in another Hardcore match. And a month later at Bash at the Beach 1999, Hak competed in the Junkyard Invitational, which was won by Fit Finlay. Fullington was released from his WCW contract in September 1999 as part of a cost-cutting measure by new WCW Executive VP Bill Busch.