In 1993, Mosh would make several appearances in the World Wrestling Federation as an enhancement talent (under the name Chaz Ware).
Mosh and his tag partner Thrasher first appeared as a tag team in the WWF as the Spiders, and then as The Flying Nuns, with Mosh as Mother Smucker and Thrasher as Sister Angelica; debuting on the premiere broadcast of Shotgun Saturday Night along with Brother Love in January 1997. Soon after, they debuted as Mosh and Thrasher, The Headbangers, a pair of metal fans who dressed in kilts. They wrestled in the WWF throughout the late 1990's, briefly holding the WWF Tag Team Championship in 1997.
After Thrasher suffered a knee injury in May 1999, Mosh was renamed Beaver Cleavage. He appeared in black-and-white vignettes with his "mother", the voluptuous Mrs. Cleavage, and the two would exchange sexual innuendos (e.g. Mrs. Cleavage would offer Beaver some of "Mother's milk" when he complained that his cereal was dry). The gimmick was quickly scrapped.
On June 28, 1999, Mosh, now calling himself Chaz, ridiculed the Beaver Cleavage gimmick and identified Mrs. Cleavage as his girlfriend, Marianna, in a shoot-style interview. Chaz and Marianna feuded with Meat and his female entourage, then with Prince Albert. Chaz left Marianna on the September 9 episode of SmackDown!, and she begged him to take her back throughout the night. On the September 13 episode of Raw is War, Marianna came to ringside with a black eye, and it was implied that Chaz had beaten her. Over the following weeks, Chaz would be on the receiving end of beatdowns from various wrestlers as well as being screwed out of matches by officials, all of whom were angry at Chaz for allegedly beating Marianna. Marianna attempted to have police arrest Chaz, but he was saved by the intervention of Thrasher, who showed film that demonstrated that Marianna was lying. Marianna was arrested, and the Headbangers were reformed.
The Headbangers then took on a gimmick where they would dress as the opponents that they feuded with, such as the Dudley Boyz and the Mean Street Posse. They later turned heel, and began to dress in drag, most notably wearing breast cones. In June 2000, Mosh, once again known as Chaz, formed a new tag team with D'Lo Brown known as Lo Down. They enjoyed minor success, but were paired with Tiger Ali Singh and given the gimmicks of two bitter ethnic wrestlers who felt that they were being held down. They were given new ring attire, incorporating turbans and sashes, began using Tiger's entrance music, and were even given Arabic sounding names on one episode of Sunday Night Heat. The popularity of the team rapidly dwindled; at the 2001 Royal Rumble, they were both denied a spot in the Rumble match, as their spot had been given to comedian Drew Carey. The team was eventually taken off of television, and Singh and Chaz were released. Chaz had his final WWF match on the July 30, 2001 edition of Raw is War, in a dark match defeating the Inferno Kid.
On August 26, 2016, it was reported that Mosh and Thrasher would return to WWE, as part of the SmackDown brand. They lost their return match to Heath Slater and Rhyno on the August 30 episode of SmackDown. They also fought The Usos for a chance to compete at Survivor Series, but ended up losing. The Headbangers appeared on the November 15, 2016 900th episode edition of SmackDown Live, teaming up with other villainous teams.