Artists like Geezer Butler

GZR was an American heavy metal band founded by and named after Black Sabbath bassist/lyricist Geezer Butler. The band has been marketed with three different names on different releases, g//z/r in 1995, geezer in 1997, and GZR in 2005. Most fans refer to the band as "geezer", although Butler himself refers to the band name as "gee-zed-ar". This incarnation of the band is not to be confused with Butler's previous attempt in 1985 to form a solo band, then known as the Geezer Butler Band – the two outfits are largely unrelated.

The Birthday Massacre is a Canadian rock band formed in 1999 in London, Ontario and currently based in Toronto. The current lineup consists of lead vocalist Sara 'Chibi' Taylor, rhythm guitarist Michael Rainbow, lead guitarist Michael Falcore, keyboardist Owen Mackinder, drummer Philip Elliott, and bassist Brett Carruthers.

Probot was a heavy metal recording project led by American musician Dave Grohl, as a side project from his primary group Foo Fighters. The album was released in February 2004.

Corrosion of Conformity is an American heavy metal band from Raleigh, North Carolina, formed in 1982. The band has undergone multiple lineup changes throughout its existence, with lead guitarist Woody Weatherman as the sole constant member. Weatherman, founding bassist Mike Dean, founding drummer Reed Mullin and vocalist/rhythm guitarist Pepper Keenan are widely regarded as its "classic" lineup. After a hiatus in 2006, Corrosion of Conformity returned in 2010 without Keenan, who had been busy touring and recording with Down, but announced their reunion with him in December 2014. More lineup changes have happened since then, with John Green replacing Mullin after his death in 2020 and Dean departing from the band once again in 2024.

Machine Head is an American heavy metal band from Oakland, California. The band was formed in 1991 by vocalist/guitarist Robb Flynn, who remains the only original member of the band. Machine Head's aggressive musicianship made it one of the pioneering bands in the new wave of American heavy metal. Its current lineup comprises Flynn, bassist Jared MacEachern, drummer Matt Alston and guitarist Reece Scruggs. Bassist Adam Duce, guitarists Logan Mader, Ahrue Luster, Phil Demmel and Wacław Kiełtyka, and drummers Tony Costanza, Chris Kontos and Dave McClain are former members of the band; Mader and Kontos toured with the band in 2019 and 2020 as part of the 25th anniversary tour for its first album, Burn My Eyes (1994).

Damageplan was an American heavy metal band from Dallas, Texas, active between 2003 and 2004. Following the demise of their previous group Pantera, brothers Dimebag Darrell and Vinnie Paul Abbott wanted to start a new band. The pair recruited former Halford guitarist Patrick Lachman on vocals, and later Bob Zilla on bass. Damageplan released New Found Power, their only album, in February 2004. New Found Power debuted at number 38 on the Billboard 200, selling 44,676 copies in its first week.

Testament is an American thrash metal band from Berkeley, California. Formed in 1983 under the name Legacy, the band's current lineup includes rhythm guitarist Eric Peterson, lead vocalist Chuck Billy, lead guitarist Alex Skolnick, bassist Steve Di Giorgio and drummer Chris Dovas. Testament has experienced many lineup changes over the years, with Peterson being the only remaining original member. The band has released fourteen studio albums, four live albums, five compilation albums, thirteen singles and three DVDs. They are estimated to have sold over 1.4 million albums in the United States since the beginning of the SoundScan era, and over 14 million copies worldwide as of 2016.