Mateusz Maurycy Śmierzchalski (born 18 July 1982, Gdynia, Poland), stage name Havoc, is a Polish heavy metal musician. He is best known for being the former rhythm guitarist for Behemoth. Since 1999, he is lead guitarist of the sludge-doom metal band Blindead. Mateusz Śmierzchalski is endorsed by Mayones. Discography Behemoth Live Eschaton (2000, VHS, Metal Mind Records) Thelema.6 (2000, Avantgarde Music) Antichristian Phenomenon (2000, Avantgarde Music) Zos Kia Cultus (2002, Avantgarde Music) Conjuration (2003, Regain Records) Crush.Fukk.Create: Requiem for Generation Armageddon (2004, DVD, Regain Records) Abyssus Abyssum Invocat (2011, Peaceville Records) Seagulls Insane and Swans Deceased Mining Out the Void Seagulls Insane and Swans Deceased Mining Out the Void (2011, Witching Hour Productions) References 1982 births Living people Behemoth (band) members Black metal musicians Polish heavy metal guitarists Polish heavy metal singers 20th-century Polish male singers Polish male guitarists