Norwegian black metal drummer, vocalist and multi-instrumentalist most famous for his work with bands like Satyricon and Ulver. He is known for his non-traditional approach to playing blast beats.
He founded Satyricon in 1990 before joining Ulver in 1993.
He lost the use of his feet after falling from a four-story window in March 2005.
He grew up in Norway.
He and keyboardist Kimberly Gross have both served as touring members of black metal stalwarts Dimmu-Borgir.