Tom Cato Visnes, better known as King ov Hell or simply King, is a Norwegian musician. He is best known as the former bassist of black metal band Gorgoroth, and as a member of Audrey Horne, Sahg, I, Ov Hell, God Seed, Abbath, Jotunspor and Temple of the Black Moon.

Gorgoroth is a Norwegian black metal band based in Bergen. It was formed in 1992 by guitarist Infernus, who is the sole original member remaining, and has released nine studio albums. Gorgoroth are a Satanic band and have drawn controversy due to some of their concerts, which have featured impaled sheep heads and mock crucifixions. The band is named after the dead plateau of darkness in the land of Mordor from J. R. R. Tolkien's fantasy novel The Lord of the Rings.