Thanatos, Lord of Death.
The third-ranked Demon in the Demon Realm behind the Demon Sovereign and the Goddess of Destiny. But unlike his other kin, Thanatos wasn't a regular Demon.
Thanatos was an existence that had existed for thousands, if not millions of years. Even the Demon himself couldn't tell how long he's been alive. Call him a spectre, a ghost, or an astral being; Thanatos was a special existence.
He wasn't born through conventional methods. He wasn't a pulse of energy that grew into massive Demon Lords like Baishe or Cthulhu. Neither was he a brainless machine like Eyghon. Thanatos was just a soul that wandered through the Demon Realm endlessly and mindlessly, forever cursed to never feel warmth and to suffer in complete solitude.
Everything it touched died instantly. Everything that came near to it withered away like brittle ash. Everything that it dared to love… dissipated away into nothingness.
