demon knight in scifi military obsidian armor exoskeleton but muscular body posing in cosmos, octane render, 4k, hardsurface, scifi, zbrush clay sculpture, Simon Lee, artstation 3D, unreal 4, ue4 ue5, high poly, highly detailed, thorns biomechanical environment with exposed ribs and teeth, horror medical, film grain, film, cinematic, dof, in focus, bokeh