Novena

Progressive Metal

3 Albums

Novere

Metal

2 Albums

Oak

Doom Metal

4 Albums

Oakenshield

Viking Metal

3 Albums

Obiat

Stoner Metal

4 Albums

OBKATIEKAT

Metal

1 Album

Oblivionized

Brutal Death Metal

3 Albums

Obsessive Compulsive

Metal

6 Albums

Obsidian Key

Metal

1 Album

Oceans Ate Alaska

Metalcore

7 Albums

Odious Hiss

Atmospheric Black Metal

1 Album

Odoacer

Black Metal

2 Albums

Ofnus

Atmospheric Black Metal

2 Albums

Of Solitude and Solemn

Doom Metal

2 Albums

Of Spire & Throne

Heavy Metal

6 Albums

Ohhms

Post-Metal

6 Albums

Okay You Win

Metal

1 Album

Old Corpse Road

Symphonic Black Metal

5 Albums

Old Forest

Black Metal

12 Albums

Old Horn Tooth

Stoner Metal

2 Albums

Old Man Lizard

Metal

5 Albums

Ol Drake

Metal

1 Album

Olivia Neutered John

Blackened Death Metal

5 Albums

Omega

Heavy Metal

1 Album