Numb

Industrial Metal

11 Albums

Numenorean

Post-Metal

2 Albums

Nylithia

Thrash Metal

3 Albums

Oath Div. 666

Death Metal

2 Albums

Obad-Hai

Progressive Metal

1 Album

Obey the Brave

Metalcore

4 Albums

Obliveon

Technical Thrash Metal

4 Albums

Obscene Crisis

Death Metal

1 Album

Obscene Eulogy

Black Metal

1 Album

Obscurcis Romancia

Symphonic Black Metal

3 Albums

Obsidian

Thrash Metal

3 Albums

Obsydian

Death Metal

1 Album

Obvurt

Technical Death Metal

3 Albums

Occult Burial

Thrash Metal

3 Albums

Occult Witches

Metal

4 Albums

Ocean Towers

Metal

5 Albums

Odin's Law

Thrash Metal

3 Albums

Odium

Melodic Death Metal

4 Albums

Of Human Bondage

Black Metal

4 Albums

Olde

Metal

4 Albums

Old Graves

Atmospheric Black Metal

4 Albums

Ol' Time Moonshine

Metal

4 Albums

Ominous Eclipse

Thrash Metal

3 Albums

Omniesia

Metal

1 Album