Annihilator is a Canadian thrash metal band founded in Ottawa in 1984. It is the highest-selling Canadian thrash metal group in history, having sold more than three million albums worldwide, although most sales have been generated outside of Canada. Along with Sacrifice, Voivod and Razor, Annihilator is known as one of the "big four" of Canadian thrash metal. They are also considered to be part of the "second wave" of thrash metal bands from the late 1980s and early 1990s. Annihilator has released seventeen studio albums and undergone many line-up changes. Waters is the only remaining original member, and 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 praise from critics, and enjoyed success in Europe and Japan. Their most recent studio album of original material, Ballistic, Sadistic, was released in 2020.