Roots of Criminal

Kreator is a German thrash metal band from Essen, formed in 1982. Their current line-up consists of lead vocalist and rhythm guitarist Miland "Mille" Petrozza, drummer Jürgen "Ventor" Reil, lead guitarist Sami Yli-Sirniö, and bassist Frédéric Leclercq. The band's line-up has changed multiple times throughout its 44-year career, most noticeably their bassists and lead guitarists. Petrozza and Reil are the only two original members left in Kreator, although the latter left the band in 1994 but rejoined in 1996. Yli-Sirniö has been the lead guitarist of Kreator since 2001, while Leclercq joined in 2019 as the replacement of Christian "Speesy" Giesler, who had been in the band since 1994.

Exodus is an American thrash metal band formed in 1979 in Richmond, California. Their current lineup consists of guitarists Gary Holt and Lee Altus, bassist Jack Gibson, drummer Tom Hunting and lead vocalist Rob Dukes. Notable former members of the band include vocalists Paul Baloff and Steve "Zetro" Souza, drummers John Tempesta and Paul Bostaph, and founding guitarist Kirk Hammett who later joined fellow Bay Area thrash metal band Metallica. There are no original members left in Exodus other than Hunting, who had departed from the band twice, in 1989 and 2004, but rejoined in 2007. Holt, who has been in the band since 1981, is the only member to appear on every Exodus album. Much of the band's career has been affected by lineup changes, feuds between both band members and record companies, two extended hiatuses, deaths of former band members, and drug addictions.

Extreme Noise Terror are a British extreme metal band formed in Ipswich, England in 1985. They are considered to be one of the earliest and most influential crust bands. Noted for one of the earliest uses of dual vocalists in hardcore, and for recording a number of sessions for BBC Radio 1 DJ John Peel, the band started as crust punks and helped characterise the early, archetypal grindcore sound with highly political lyrics, fast guitars and tempos, and often very short songs.

Cradle of Filth are an English extreme metal band formed in Suffolk in 1991. The band's musical style evolved originally from black metal to a cleaner and more "produced" amalgam of gothic metal, symphonic metal and other metal genres. Their lyrical themes and imagery are heavily influenced by Gothic literature, poetry, mythology and horror films. The band consists of its founding member, vocalist Dani Filth, drummer Martin "Marthus" Škaroupka, bassist Daniel Firth, and guitarists Donny Burbage and Joff Bailey.

Megadeth is an American heavy metal band formed in Los Angeles in 1983 by vocalist and guitarist Dave Mustaine. Known for their technically complex guitar work and musicianship, Megadeth is one of the "big four" of American thrash metal—along with Slayer, Anthrax, and Metallica—and is credited with helping to develop and popularize the genre. Their music features intricate arrangements, fast rhythm sections, dual lead guitars, and lyrical themes such as war, conflicts, politics, religion, death, and personal relationships.