Mütiilation is a one-man black metal band that was affiliated with Les Légions Noires (or LLN). It was formed in 1991 by Willy Roussel (Meyhna'ch) in Grabels, Languedoc-Roussillon, France, and soon after became affiliated with the LLN. After their first full length, Vampires Of Black Imperial Blood, in 1996 Meyhna'ch left the Black Legions. They are also the only band affiliated with the LLN (with an exception of Vermeth and Amaka Hahina) that has kept going after 1998. Mütiilation was officially terminated by Meyhna'ch in December 2009. As of 2024, Mütiilation has been reactivated with the release of Black Metal Cult.

Members of Celestia played instruments live for Mütiilation in 2001 for 2 shows - the Drakkar Hellfest & Under the Black Sun.

Meyhna'ch also performs vocals for Hell Militia & Od Sanctus.

Sorrow Galaxies (2007) was the first Mütiilation album since Vampires of Black Imperial Blood to have real drums.