Voivod (or Voïvod) is a Canadian heavy metal band from Jonquière, Quebec. The band's current line-up consists of Denis "Snake" Bélanger (vocals), Daniel "Chewy" Mongrain (guitar), Dominique "Rocky" Laroche (bass) and Michel "Away" Langevin (drums). Their musical style has changed several times since the band's origin in the early 1980s. Starting out as a speed metal band, Voivod have added a mix of progressive metal and thrash metal to create their own unique metal style, and they are credited as one of the "big four" Canadian thrash metal bands, along with Sacrifice, Razor, and Annihilator.