Voivod is a Canadian heavy metal band from Jonquière Quebec. The original line-up consisted of vocalist Denis "Snake" Bélanger, guitarist Denis "Piggy" D'Amour, drummer Michel "Away" Langevin and bassist Jean-Yves "Blacky" Thériault. The band has had numerous members changes throughout its 42-year career, with Langevin as the only consistent member. Their current line-up includes Langevin, Bélanger, Daniel "Chewy" Mongrain and Dominic "Rocky" Laroche.
Voivod's musical style has changed several times since its inception. Starting out as a speed metal band, they have added a mix of progressive and thrash metal to create their own unique metal style, and have been credited as progenitors of the "technical thrash metal" sound along with Coroner, Watchtower, Dark Angel, Mekong Delta, Anacrusis and Blind Illusion, among others.
To date, Voivod have released sixteen studio albums, as well as one EP, one live album, two compilations, seven demos and one DVD featuring a live concert. They have been grouped with Sacrifice, Razor and Annihilator in the "Big Four" of Canadian thrash metal.