Humperdink worked for World Championship Wrestling (WCW) in the 1980's, where he managed Greg Valentine, Paul Jones and The One Man Gang. He left the company in 1983.
In 1987, he joined the World Wrestling Federation (WWF). As a part of the WWF, he managed Bam Bam Bigelow. That same year, he also began managing Paul Orndorff during his feud with Rick Rude. He managed the duo during the first-ever Survivor Series in a match that they lost when Bigelow was pinned by André the Giant. Humperdink also managed Bigelow during WrestleMania IV when he lost in the first round of a WWF Championship tournament.
When he returned to WCW in 1988, he returned to the side of Bigelow in his feud with Barry Windham in a match at Starrcade.
He worked for WCW in the early 1990's as "Big Daddy Dink", a biker-type gimmick. In WCW, he managed The Fabulous Freebirds (Michael Hayes and Jimmy Garvin).
On March 20, 2011, Humperdink passed away.