Sludge and post-metal band from Saint Petersburg, Russia, formed in 2013, named after the mythological Welsh king of the Otherworld. Over a decade of crushing sludge from the northern capital.

Sludge and doom metal band from Malmo, Sweden, active since 2009, delivering over sixteen years of monolithic sludge and doom from the southernmost Swedish city. They are veterans of the Scandinavian sludge scene.

Sludge metal and crust punk band from Alcorcon in the Madrid metropolitan area of Spain, formed in 2016. They released a self-titled four-track demo in June 2016 featuring compositions identified by Roman numerals, blending the crushing weight of doom and sludge with the raw fury of crust. Their sound sits at the abrasive intersection of metal and punk.

Sludge/doom metal band from Leipzig, Germany, active since 2015 and known for their oppressively heavy sound. They have released at least two records including a self-titled album and "VERSUS," both channeling the weight and grit that define the sludge and doom crossover.

R. Josef is a solo atmospheric sludge and post-black metal project from Leipzig, Germany, formed in 2019, with all music written and performed by a single musician. Their 2019 Panoptic EP was released on cassette via Bharal Tapes in a limited run of 66 handmade silkscreened copies, delivering four tracks of dense sludgy post-metal.

R.O.L.F. is a doom/sludge metal and death 'n' roll band from Algeciras in southern Spain, active since 2009. The band channels heavy, low-end-driven doom and sludge with rock 'n' roll swagger from the Strait of Gibraltar.

Abruzzo act from Atessa that evolved from grind 'n' roll origins into a death 'n' roll, sludge, and stoner metal hybrid since 2011. Their stylistic evolution reflects a band constantly discovering new ways to channel aggression through groove-laden heaviness.

Radien is a sludge metal band from Helsinki, Finland, formed in 2016. Named after the supreme deity in Sami mythology, the band delivers heavy sludge from the Finnish capital.

Rage of Samedi is a doom/sludge metal band from Zweibrücken in the Rhineland-Palatinate region of Germany, formed in 2014. Their releases including Blood Ritual and Children of the Black Sun channel dark, ritualistic themes through heavy, low-end-driven doom and sludge.