There are three artists/bands which goes by the name Heller: 1. Heller was Serbian thrash metal band. They were part of the Big Three (others included were the Bosnian ''Bombarder'' and Croatian ''Evil Blood'') Their music is primitive and raw, and lyrics about satanism, war etc. Great band if you're into old school thrash metal. The band was formed in 1985 by Attila (real name Atila Milojković - guitar and vocals) and Kole (real name Kosta Bogdanović