Stefan Westerberg was born on the 29th of April 1977 in Västerås, Sweden. He is drummer and one of the founders of Carnal Forge. Previous bands he played in are In Thy Dreams and World Below. Anther (current) project Westerberg is involved in is Leech.
Westerberg departed from World Below in December 2004 and was replaced by Centinex drummer Ronnie Bergerståhl.