ystein Aarseth (Norwegian: [stn t]; 22 March 1968 10 August 1993), better known by his stage name Euronymous, was a Norwegian musician. Euronymous was a founder of and central figure in the early Norwegian black metal scene. He was a co-founder and guitarist of the Norwegian black metal band Mayhem and was the only constant member from the band's formation in 1984 until his death in 1993. He was also founder and owner of the extreme metal record label Deathlike Silence Productions and record shop Helvete.

Euronymous professed to being a Theistic Satanist and was known for making extreme misanthropic statements. He presented himself as leading a militant cult-like group known as the "Black Metal Inner Circle".

In August 1993, he was killed by fellow musician and former bandmate Varg Vikernes.

Louis Cachet (born Kristian Vikernes; 11 February 1973), better known as Varg Vikernes (Norwegian: [ˈvɑrɡ ˈvìːkəɳeːs]), is a Norwegian musician and author best known for his early black metal albums and later crimes. His first four records, issued under the name Burzum from 1991 to 1994, made him one of the most influential figures in black metal. In 1994, he was convicted of murder and arson, and subsequently served 15 years in prison.A native of Bergen, Vikernes began playing guitar at the age of 14 and formed his first band, Kalashnikov, by 1989. After founding Burzum, he became part of the early Norwegian black metal scene. In 1992, Vikernes, along with other members of the scene, was suspected of burning down four Christian churches in Norway. Vikernes denied committing the arsons, though he supported them. In 1992–1993, he also recorded bass for Mayhem's debut album De Mysteriis Dom Sathanas.

In August 1993, Vikernes fatally stabbed Mayhem guitarist Euronymous during an altercation at the latter's apartment, and was arrested shortly after. In May 1994, Vikernes was convicted of first-degree murder, church arson and possession of explosives. Vikernes said the killing was self-defense and unsuccessfully argued for the charge to be reduced to voluntary manslaughter. He was sentenced to 21 years in prison, the maximum penalty under Norwegian law. During his incarceration, Vikernes launched the Norwegian Heathen Front, had two books published, and released two ambient albums as Burzum. In 2009, he was released on parole, after which he moved to France with his wife and children, where he has continued to write and make music. He was also an active video blogger on his YouTube channel ThuleanPerspective, before the channel was deleted.Described by Sam Dunn as "the most notorious metal musician of all time", Vikernes remains controversial for his crimes as well as his political and religious views. He promoted views which combined Odinism and Esoteric Nazism, and openly embraced Nazism during the mid-late 1990s. He has since disavowed the ideology and its associated movements, although critics continue to label his views as far-right. Vikernes calls his beliefs "Odalism" and advocates a "pre-industrial European pagan society", opposing Christianity, Islam, Judaism, capitalism, socialism and materialism.