The band plays many shows all over Switzerland with bands such as Death SS, Necrophobic, Daemonia, Cataract, Kruger, Belphegor, Abgrund, Paul Di Anno and other local acts.
In late 2007, with a new line up, the third era of the band begins and Heavy Demons can come back to the scene with live gigs, including a date with Minnesota's shockrock masters Impaler
Heavy Demons were officially grounded in the beginning of 2001 as a result of a project already created by Jack Demon (vocals) in the precedent years. The first demo, Light Of Darkness, is recorded in 2002.
The band evolves and develops new sonorities more in the thrash/death metal direction. In the spring of 2004, the band enters AlphaOmega Studios to record a self-produced EP named Empty Inside.
In summer 2009, Heavy Demons enters Stairway Studio with producer Ste Scenini to record a 10 tracks effort. Nonetheless, the band continues to appear live and supports thrash metal legends Destruction for the Swiss date of their 2009 tour.
Heavy Demons' first album, Tenebra, containing 9 original tracks and a cover of the song Heavy Demons, by the Italian horror metal band Death SS, is released on June 24th 2010.