A photorealistic character design of a void arcanist shrouded in ethereal mist, intricately detailed with hyper-realism. The scene is rendered using Octane Render and Unreal Engine, featuring volumetric lighting and HDR effects to enhance the mystical atmosphere. The arcanist is adorned in arcane robes, with dark swirling patterns reminiscent of cosmic nebulae. Their eyes glow with a mysterious light, casting an aura that merges seamlessly with the surrounding mist. The setting is an enigmatic void, with tendrils of mist dancing around, creating dynamic movements that reflect off the arcanist's attire.