Mitochondrion is a Canadian death metal band from Victoria, British Columbia, formed in 2003. The band has undergone some line-up changes, but since 2006 Mitochondrion was solidified as a power trio with Shawn Haché, Nick Yanchuk and Karl Godard. With this line-up Mitochondrion has recorded two full-length studio albums, the self-released Archaeaeon and Parasignosis, which was released through Profound Lore Records. They later released an EP "Antinumerology" released by Dark Descent Records and Krucyator Productions and a split EP "In Cronian Hour" released by Dark Descent Records and Hellthrasher Productions.
According to music critics, "What makes Mitochondrion stand out is their ability to bring order to chaos. [...] It is a trait they share with Deathspell Omega, who craft a dizzying amount of sounds and influences into something palpably evil and eminently listenable. When most other bands try this, it sounds like they are toying with forces they do not understand." The musicianship on Parasignosis has been defined by Decibel magazine as a "dense, not-so-easily-digestible labyrinth of frightening mindfuckery."

Gridlink is an American grindcore band, founded in 2004 in Hoboken, New Jersey. Their style can be described as technical grindcore with lyrical themes focused around abstract concepts and science fiction.
The band's song Orphan, also from their EP titled Orphan, was played sporadically as torture in the episode Blind Spot, of the Showtime television series, "Homeland".

Liberteer is the grindcore project of Santa Cruz, California–based musician Matthew Widener, best known for his work for Exhumed, The County Medical Examiners and Cretin. The project started out as a band under the name Citizen and went through a name change with Widener's shifting political views. It released its debut album, Better to Die on Your Feet Than Live on Your Knees in 2012 through Relapse Records.
Liberteer's lyrics mainly deal with anarchism. Compositionally, its sound also features unconventional elements such as brass and banjo sections, as well as influences from classical music, which Widener studies and composes.

Vasaeleth is a death metal band formed in 2008. It is a collaboration between Atlanta, Georgia-based multi-instrumentalist O.A. and Dallas, Texas-based drummer Antinom. The band is influenced by old school death metal bands such as Incantation, Immolation, Rottrevore, Demoncy, and Nihilist.

Ulcerate is a New Zealand-based extreme metal band formed by guitarist Michael Hoggard and drummer Jamie Saint Merat in 2000. The band have released five full-length studio albums to date. The band's fifth full-length album Shrines of Paralysis was released on October 28, 2016 on Relapse Records. The band have been featured in numerous articles as one of New Zealand's most prominent extreme metal acts, have toured widely across North America and Europe, and have been compared favourably to bands such as Neurosis and Gorguts. The band's sound has been described as "nauseating, disorienting and gleefully disharmonic", and is characterised by extremely technical death metal with extensive use of dissonance, time signature changes, and complex song structures.

Ehnahre is an experimental Extreme metal ensemble and contemporary composition collective based in Boston, Massachusetts. Their music incorporates elements of Contemporary classical music, Aleatoric music, Doom metal, and Death metal, and utilizes extended techniques, aleatoric rhythms, aspects of Serialism, and elements from free improvisation, contemporary chamber music, and extreme metal styles.
According to critic and composer Matthew Guerrieri, Ehnahre's music, "fueled by dissonance, constantly slips free of such genre expectations", "[unfolding] in heavy, slow-moving clouds of sound". Although their compositions are fixed, usually in conventional notation, their dense rhythms, harmonies, and avoidance of repetition often draw comparisons from Free jazz and Free improvisation. They do not write their own lyrics, choosing instead to set texts by great modernist poets.

Weapon was a Bangladeshi-Canadian black metal / death metal band, formed by frontman Vetis Monarch in early 2003 in Calgary, Alberta, Canada. After the formation of the band, Vetis temporarily moved to his birthplace of Dhaka, Bangladesh, where the 'Within the Flesh of the Satanist' Demo tape and 'Violated Hejab' EP were recorded. In 2005, Vetis moved back to Canada, but relocated Weapon to Edmonton. The band gained notoriety locally and internationally with incidents of violence. Weapon signed with Relapse Records in 2011 and released their label debut, Embers and Revelations, in 2012. Subsequently, Weapon toured North America with Marduk beginning in May 2012.
In October 2012, Weapon and an older United Kingdom band of the same name came to a legal agreement that the latter band would add 'UK' to their band name. Weapon state at their official Facebook page that they own the US, Canadian and UK trademarks on the name, leading the UK band to change their moniker.
According to frontman Vetis Monarch, Weapon's lawyer Eric Greif worked out their recording deal with Relapse and settled the legal dispute over the band name.
The band announced on June 28, 2013 that they had broken up.

Woe is an American black metal band formed in 2007 in Philadelphia. Originally a solo project of Chris Grigg, the band now includes guitarist Ben Brand and bass guitarist Grzesiek Czapla as permanent members.