Oldskull “Nether Hollow of No Return”

Omnivorous “Omnivorous”

ONCOLOGY “Omniversal Antigenesis”

Onirophagus “Prehuman”

Onirophagus “Endarkenment”

Ossuary “Anex Holy Blasphemition”

Obsoletenova “Unfathomable”

Orategod “Fall Slowly Until The Hell Abyss”

ONRYŌ “Mūto”

Odiusembowel / Sexual Atrocities split

OXIDISED RAZOR “Collection Of Putrefaction” v.2

OHIO SLAMBOYS “ZOMBIE KILLING PROCESS”

Osseltion “Last Words”

Obsoletenova “Malfunction In Sencory Illusion”

Ovarian Despoilment “Ustulate Monuments​”

OPIUM “Necrology Disorder”

Obscure “Back To Skull”

OCCULTUM “TOWARDS ETERNAL CHAOS”

OSSIFICATION “OSSIFICATION”

Obsolete Mankind “False Awakening”

Omnioid “Womb Of Infirmity”

OPIUM “NECROLOGY DISORDER”

OMNIVOROUS “Age of Maelstorm”

ONICECTOMY “Drowning For Salvation”

OBEISANCE “Hellbent On Slaughter”

OUTCAST “MASS MURDER FANTASIES”

ONOMASY “Between Two Worlds”

OSSARIUM “Emanation”

Odious Sanction “No Motivation To Live”

Oblivion “Called To Rise”

Omnipotent Hysteria “Forged In The Embers Of Monolithic Devastation”

Obscure “Back To Skull”

Ochorid “Process Of A Rotting Worlds”

OCTOPURATH “Spawned Beyond The Oneiric Abyss”

ONCOLOGY “Infinite Regress”

OBSOLETE INCARNATION “Eradication Of Society”

Orgiastic Rebirth “Corridors Of Repugnant Suffering”

Ossuary Anex “Mutilation Through Prayer”