Character design of a dark souls knight with full body armor, shrouded in ethereal mist, rendered in photorealistic detail using state-of-the-art techniques from octane render and unreal engine, showcasing hyper detailed craftsmanship with volumetric lighting effects, ultrarealistic textures, captured in stunning 8k resolution, hdr, atmospheric and moody lighting, with an aspect ratio of 9:16, maintaining a sense of mystery and ancient power.