Øystein Aarseth, better known by his stage name Euronymous, was a Norwegian musician and 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.

The early Norwegian black metal scene of the 1990s is credited with creating the modern black metal genre and produced some of the most acclaimed and influential artists in extreme metal. It attracted massive media attention when it was revealed that its members had been responsible for two murders, a suicide, and a wave of church burnings in Norway.