Fantasy emblem of a terrifying ancient demon lord, forged from twisted, charred elemental bones pulsating with dark infernal fire. The emblem is engulfed in swirling, malevolent shadows mixed with crackling black lightning and eerie spectral glitter. At the center, a grotesque, nightmarish demon face with glowing blood-red eyes, jagged fangs, and cracked skin that oozes dark energy, exuding pure dread. Ultra-detailed, hyper-realistic textures with a sharp, high-resolution finish. The whole image radiates an overwhelming aura of evil and doom, evoking primal fear. #emblem#