Soilent Green was founded in 1988, but their debut album was not released until 1995, when Pussysoul came out via Dwell Records.

[3] Soilent Green's musical style is characterized as a mixture of grindcore with sludge and blues-heavy southern rock.

[4] Rock Hard initially saw the band as an intersection of Eyehategod, Crowbar and Anal Cunt with occasional borrowings from death metal,[5] but on the next album the group's sound focussed on grindcore, which the band combined with influences from sludge and technical death metal,[6] and coined the term "sludgegrind" for Soilent Green's 2008 album.

[7] Michael Edele of laut.de described the band's style as a "contradictory mixture of hardcore, sludge, grindcore and southern rock".

[10] In 2009, Soilent Green was featured on the first episode of season four on the Adult Swim show Squidbillies, entitled "Lerm".