Iron Monkey was an influential sludge metal band that emerged from the gritty industrial landscapes of Nottingham, England, in the mid-1990s. With a sound characterized by its raw, aggressive fusion of doom metal, hardcore punk, and a palpable sense of nihilism, they were often compared to groups like Eyehategod and Grief, yet they maintained a distinctly British edge that set them apart. The band's crushing riffs, guttural vocals, and bleak lyrical themes earned them a dedicated following in the underground metal scene.

The original incarnation of Iron Monkey went through several lineup changes and disbanded in the late 1990s, leaving behind a legacy of influential recordings. However, to the surprise of many fans, the band resurfaced in 2017 with a new lineup and the album "9-13," their first full-length release in nearly two decades. Reflecting a continuation of the band's trademark sound, "9-13" was a powerful return to form, displaying the band's ability to evolve while staying true to the visceral intensity of their roots. Accompanying the album's release were singles such as "9-13," "Crown of Electrodes," and "Omegamangler," all of which reinforced Iron Monkey's reputation as a heavyweight in the genre and introduced their punishing sound to a new generation of metal enthusiasts.