Jan Axel Blomberg

Also in 2010, Hellhammer played on Nidingr's album Wolf-Father. In 2011 Arcturus reunited, Hellhammer included, and released Arcturian in 2015.

In 2009, Hellhammer appeared on Eyes of Noctum's album Inceptum, where he played drums on six tracks. Eyes of Noctum are a black metal band from America featuring Weston Cage, son of Nicolas Cage as their lead singer.

In 2005, he was interviewed for the black metal mini-documentary that was included with the 2-disc DVD edition of Metal: A Headbanger's Journey, in addition to other Mayhem members Necrobutcher (Jørn Stubberud) and Blasphemer (Rune Eriksen).

He has courted controversy in the past by making numerous racist comments and advocating violence against homosexuals. The black metal biography Lords of Chaos quotes him as saying, "I'll put it this way, we don't like black people here. Black metal is for white people.... I'm pretty convinced that there are differences between races as well as everything else. I think that like animals, some races are more ... you know, like a cat is much more intelligent than a bird or a cow, or even a dog, and I think that's also the case with different races." Blomberg said in a 2004 interview, "I don't give a crap if the fans are white, black, green, yellow, or blue. For me music and politics don't go hand in hand." In the 2008 documentary film Until the Light Takes Us he says that he "honor[s]" Bård G. "Faust" Eithun for killing a "fucking faggot".

During the year 2000 he recorded a mini album with his new band Winds, Of Entity And Mind, which was released in May 2001. Winds also recorded a full-length album during spring 2001, Reflections of the I.

Jan Axel is now a two-time Norwegian Grammy Awards winner, in 1998 for The Kovenant with Nexus Polaris and in 1999 for The Kovenant with Animatronic. They claimed the prize for best hard rock album both years. In addition to these mentioned involvements, Jan Axel has also done numerous appearances as a guest or session musician on other releases.

In 1997 Jan Axel began working with Covenant, now known as The Kovenant, for the recording of their second album, Nexus Polaris. That album was released in 1998 with a following European tour. During 1997 Arcturus also released another album, La Masquerade Infernale.

The first recordings he did with Mayhem were two songs for a compilation album around 1989, with the songs Carnage and The Freezing Moon. The first proper recording he did with Mayhem was Live in Leipzig in 1990. After that album, Mayhem had some trouble with the line up due to the suicide of the singer Dead and Necrobutcher's departure from the band. During this time he founded the band Arcturus together with Sverd in 1991, out of the remains of the band Mortem. They released the 7" My Angel in 1991 and later the mini album Constellation. In 1995 he joined Immortal as a session drummer during their tour that year, he also agreed to play drums on their first official Video, Grim and Frostbitten Kingdoms. He also briefly played for Emperor during this period. The recording and release of the Arcturus debut album Aspera Hiems Symfonia also happened this year.

Jan Axel Blomberg (born August 2, 1969) is a Norwegian heavy metal drummer, known professionally as Hellhammer. He is best known as the drummer of Mayhem, which he joined in 1988. In 1987 Blomberg formed the avant-garde black metal band Arcturus (under the name Mortem) with Steinar Sverd Johnsen, which broke up in April 2007 and reunited in 2011. He named himself after the Swiss extreme metal band Hellhammer. Praised as a talented musician, Blomberg is a three-time winner of the Spellemannprisen award.