An imposing demon clad in intricately patterned black and red armor, exuding an aura of dark magic, stands ominously. His form is wrapped in flowing cloaks of rich crimson and shadowy obsidian hues. Instead of a traditional head, a vibrant, pulsating sphere of fiery red energy hovers above his shoulders, casting an eerie glow across his surroundings. Chains cascade from his form, clinking softly with each movement. This formidable figure is reminiscent of a creature from a legendary fantasy epic, possessing a presence that could dominate the realms of both the mystical lands of Middle-earth and the grand adventures of Dungeons and Dragons, captured in stunning 4k ultra-realistic detail using cutting-edge visual technology.