Maniac

Sven Erik Kristiansen is a Norwegian vocalist. He is known mostly as the former vocalist of Mayhem.

Deathcrush
Maniac joined Mayhem in 1988 after the departure of former vocalist Messiah. While with the band, he recorded the 1987 EP Deathcrush. He left Mayhem in 1988.

Rejoining and Leaving
Mayhem effectively disbanded in 1993, but was reformed in 1995 by former Mayhem drummer Hellhammer. Maniac rejoined the band during this period. While with the group, he recorded the EP Wolf's Lair Abyss, the live album Mediolanum Capta Est, the studio album Grand Declaration of War, and the studio album Chimera. He left the band in 2004, citing his alcoholism and a lack of time as reasons.