Daikaiju (giant monster)

Unknown

Male

"The Adversary of Life," "Onyxian Extinction," "Great Cataclysm Beast"

Red sclera, amber irises

Pitch black, stone-like

Kaiju

?????? metric tons

Height: ??? meters (???ft)
Length: ??? meters (???ft)

Spreads the "Fog of Death" throughout an area to absorb as much life energy from surroundings as possible. Feeds off of all lifeforms, regardless of size; won't stop draining life from an area until nothing remains.

Single-minded desire to destroy. Hunger.

Enters a dormant state if energy is depleted.

Nigh-invulnerable. Life-force manipulation and absorption. Miasma generation. Fear inducement. "Fog of Death".

The only known records of this mysterious entity bizarrely hail from an unknown age in Earth's prehistory. From what little has been decoded, "the Life-Stealer" is a hostile organism encountered by an ancient civilization. It spread black clouds that blocked out the Sun and killed anything that breathed them in, reducing wherever it went to nothing as it fed itself. Simply looking upon it was said to cause intense feelings of fear and despair. The creature was somehow "imprisoned" deep underground in a way that would prevent it from feeding, and thus keep the planet safe.

As these ancient precursors' language is hardly understood, almost nothing of the Life-Stealer is known. If the accounts are true, it could be that the Life-Stealer is a kaiju, albeit a supremely dangerous one.