Dark Grey Cobra w/ Glow

There is one tameable creature with this look.

Dark Grey Cobra w/ Glow
Can Be Tamed
BossTemple of Sethraliss (Dungeon)
Retains its original name after taming.
The second boss of the dungeon.
Level scaling: Most NPCs will scale with the Hunter's level, within the constraints of their level range. Hunters can tame regular NPCs up to 2 levels higher than them, but can only tame elite NPCs of the hunter's level or below.