Silenoz (born Sven Atle Kopperud, 1 March 1977) is a Norwegian guitarist who is a founding member, along with Shagrath and Tjodalv, of the symphonic black metal band Dimmu Borgir, of which he is the primary songwriter.

Silenoz has written the majority of Dimmu Borgir's lyrics and also based the songs in the album In Sorte Diaboli on a narrative of his composition.

This episode kicked off the second season of the popular show and debuted on Adult Swim Fix on Friday 21 September 2007.

[1] For many years as guitarist in Dimmu Borgir, Silenoz appeared with long hair.

Silenoz explained in an interview that his stage-name is derived from an alternative Latinised spelling of the Greek "Silenus," the name of a satyr-like being in Greek mythology who was a tutor to the wine god Dionysus, and was said to possess special knowledge and the power of prophecy while intoxicated.