Roots of Hollywood Undead

Powerman 5000, sometimes abbreviated PM5K, is an American rock band from Boston, Massachusetts. Founded in 1991, the group has released eleven studio albums, gaining its highest level of commercial success with 1999's Tonight the Stars Revolt!, which reached number 29 on the Billboard 200 while spawning the singles "When Worlds Collide" and "Nobody's Real". Frontman Spider One, younger brother of fellow metal musician Rob Zombie, has been the only consistent member of the lineup since the band's formation, and the band has long been known for its variability in sound, taking inspiration from rap-rock in the early nineties, sci-fi and metal at the turn of the millennium, punk/nu-metal and industrial through the 2000s, and electronic rock through the 2010s and 2020s.

Black Veil Brides is an American rock band based in Hollywood, California. The group formed in 2006 in Cincinnati, Ohio, and is currently composed of lead vocalist Andy Biersack, multi instrumentalist Jinxx, lead guitarist Jake Pitts, drummer Christian "CC" Coma and bassist Lonny Eagleton. Black Veil Brides are known for their use of black makeup, body paint, tight black studded clothing, and long hair, which were all inspired by the stage personas of Kiss and Mötley Crüe, as well as other 1980s glam metal acts.

Skye Alexandra Sweetnam is a Canadian singer and songwriter. She released two solo studio albums on Capitol Records/EMI — Noise from the Basement (2004) and Sound Soldier (2007) — and was nominated for a Juno Award for New Artist of the Year in 2006. Her 2003 debut single "Billy S." and its 2004 follow-up, "Tangled Up in Me", both charted in Canada, and she toured as an opening act for Britney Spears on the Onyx Hotel Tour in 2004. She is also known for voicing Barbie's singing parts in The Barbie Diaries (2006). Since 2011, she has been the lead vocalist of the alternative metal band Sumo Cyco, performing under the stage name Sever.

Loser was an American alternative rock band which was active from 2005 to 2006.

Louis Mario Freese, known by his stage name B-Real, is an American rapper. Since 1991, he has been one of two lead rappers in the hip hop group Cypress Hill, along with Sen Dog, and the only constant member of the band. He has also been a part of the rap metal band Kush (2000–2002), the hip hop supergroup Serial Killers (2014–present) and the rap rock supergroup Prophets of Rage (2016–2019). He has released a variety of solo mixtapes, as well as two solo albums: Smoke n Mirrors (2009) and Tell You Something (2020).

New Medicine is an American rock band from Minneapolis, Minnesota, formed in 2009.

10 Years is an American alternative metal band formed in Knoxville, Tennessee, in 1999. The band consists of lead vocalist Jesse Hasek, lead guitarist Brian Vodinh, rhythm guitarist Matt Wantland, and bassist Chad Grennor. The group has gone through multiple line-up changes since their inception, with Vodinh and Wantland being the only remaining founding members. To date, they have released 10 studio albums, their most recent being Deconstructed in 2022. In 2024, they released an EP titled Inner Darkness and the full album has been announced to release in 2026.

Slipknot is an American heavy metal band formed in Des Moines, Iowa, in 1995 by percussionist Shawn Crahan, vocalist Anders Colsefni and bassist Paul Gray. After several lineup changes in its early years, the band settled on nine members from 1999 until Gray's death in 2010: Crahan, Gray, Joey Jordison, Craig Jones, Mick Thomson, Corey Taylor, Sid Wilson, Chris Fehn, and Jim Root. Slipknot is well known for its attention-grabbing image, aggressive style of music, and energetic and chaotic live shows.