Thrasher debuted in the World Wrestling Federation in August 1990, under his real name Glenn Ruth, losing to Rick Rude. He wrestled several matches for the promotion until leaving in November 1990, making several appearances on WWF Superstars and WWF Wrestling Challenge.
He also made a number of appearances for the World Wrestling Federation from 1991 to 1993, losing to big names such as Ric Flair, The Undertaker, Shawn Michaels and Bret Hart. He appeared on the second ever episode of Raw in 1993 in a losing effort against Marty Jannetty, competing as an enhancement talent.
On January 23, 1993, Thrasher, as the Spider, wrestled The Sandman to a double disqualification for Extreme Championship Wrestling.
In December 1995, he officially debuted in the WWF alongside his new tag team partner Mosh, as jobbers under the team names the Spiders, the Royal Spiders, and the Arachnoids. On an episode of Monday Night Raw, they received a WWF World Tag Team Title shot against the Smoking Gunns.
Wrestling as "The Spiders", they returned to the WWF on the September 24, 1996 episode of WWF Superstars, losing to The Smoking Gunns. In November 1996, they began wrestling as "The Headbangers". In the outset of 1997, The Headbangers briefly began wearing nun outfits and wrestling as "The Flying Nuns" and "The Sisters of Love", with Thrasher wrestling as "Sister Angelica" and Mosh as "Mother Smucker". They were briefly managed by Brother Love.
The Headbangers captured the vacant WWF World Tag Team Championships on September 7, 1997, by defeating three other teams in a four team tag match at Ground Zero. They lost the titles to The Godwinns on October 5 of that same year.
The Headbangers split in January 1999, when Thrasher suffered a knee injury and Mosh began pursuing a singles career, but reformed in late 1999 on the October 10 edition of Sunday Night Heat when Thrasher came to Mosh's aid during a domestic violence angle, which saw him vilified by other wrestlers and officials alike for a number of weeks. Thrasher had presented video footage of Mosh's girlfriend Marianna putting on makeup to make it seem as if Mosh had been abusing her. The police officers arresting Mosh then uncuffed him and arrested Marianna for her lies. Shortly thereafter, the two began appearing regularly as a team again, but were now heels and inexplicably came to the ring wearing cone brassieres, which they wore while they wrestled.
In 2000, Thrasher took part in the match for the Hardcore Championship at WrestleMania 2000. He held the title for 37 seconds, pinning Joey Abs, but was then pinned by Pete Gas. After the Headbangers split for the second time and Mosh went on to team with D'Lo Brown, Thrasher continued to wrestle in singles competition mainly on WWF Jakked before being released from the WWF in December 2000.
Thrasher and Mosh made an unannounced return to the WWE (formerly WWF) on the August 30, 2016 episode of WWE SmackDown, losing to Heath Slater and Rhyno in the first round of a tournament for the newly-created WWE SmackDown Tag Team Championship. They made two further appearances on SmackDown in November 2016.