 In 1996, Grutle together with Ivar, Infernus and Tormentor created the short-lived thrash metal band Desekrator, disbanded in 1999.In 2005, Grutle along with Ivar, Arve Isdal and other musicians created Trinacria.Grutle has a guest performance on the song "High on Cold War" on Darkthrone's 2006 EP, "Too Old, Too Cold".