Annihilator is a Canadian thrash metal band founded in 1984 by vocalist, guitarist, bassist, songwriter, engineer, producer, mixer and mastering engineer Jeff Waters and former vocalist John Bates. They are the highest-selling heavy metal group from Canada in Canadian history, having sold more than three million albums worldwide, although most of their sales have been generated outside the band's home country. Along with Sacrifice, Voivod and Razor, Annihilator is credited as one of the "Big 4" of Canadian thrash metal.
Since its inception, Annihilator has released sixteen studio albums and has undergone many line-up changes. Waters is the only remaining original member left in the band, and usually assembles touring or session musicians to perform with him. Annihilator's first two studio albums—Alice in Hell (1989) and Never, Neverland (1990)—are considered to be influential Canadian heavy metal records. Many of their later albums—including their third, and only major-label, album Set the World on Fire (1993)—also received high praise from critics, and enjoyed some success in Europe and Japan. Their recent studio album, For the Demented, was released on November 3, 2017.