Guitarist also known as Nicholaus Arson most famous as the guitarist for the Swedish garage band The Hives. He is known by fans of the band for his wild, attention-grabbing onstage antics.
He and his brother formed the Hives in 1993.
The Hives' 2000 album Veni Vedi Vicious was ranked #93 on Rolling Stone magazine's list of the Top 100 Albums of the Decade.
He is the brother of Pelle Almqvist, singer for The Hives.
He has been bandmates in the Hives with drummer Chris Dangerous.