A photorealistic character design of a void arcanist enveloped in ethereal mist, rendered in hyper detail with the powerful Octane engine and Unreal technology. The scene features volumetric lighting creating dynamic shadows and highlights, enhanced by HDR effects, emphasizing the mystical aura of the void arcanist. The arcanist exudes an enigmatic presence, with intricate robes that ripple like liquid darkness, and eyes that glow with arcane knowledge in a 9:16 aspect ratio.