Obtenebris “Dust Of Time”

Omnioid “Regurgitated Inexistential Pestilence”

Obstetra “The Evolution Paradox”

OBVURT “The Beginning”

OBLIGATORISK TORTYR “Obligatorisk Tortyr”

Öldöds “Öldöds”

OS “Stationes Viae Mortis”

Oldskull “Nether Hollow of No Return”

Omnivorous “Omnivorous”

Omni Express “Florida Man”

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

OHIO SLAMBOYS “ZOMBIE KILLING PROCESS”

Ophiocordyceps “Delusional Infestation Of Mutated Pathogens”

Ophiocordyceps “Psycho Degenerative Dysfunction Induced By Parasites Inoculation”

Osseltion “Last Words”

Obsoletenova “Malfunction In Sencory Illusion”

Ovarian Despoilment “Ustulate Monuments​”

OPIUM “Necrology Disorder”

Obscure “Back To Skull”

OCCULTUM “TOWARDS ETERNAL CHAOS”

Obsolete Mankind “False Awakening”

OPIUM “NECROLOGY DISORDER”

OMNIVOROUS “Age of Maelstorm”

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”

ONCOLOGY “Infinite Regress”

OBSOLETE INCARNATION “Eradication Of Society”

Orgiastic Rebirth “Corridors Of Repugnant Suffering”

Ossuary Anex “Mutilation Through Prayer”