8K UE5/Octane render of a post-apocalyptic cyborg warrior (Mad Max-inspired) with hyper-detailed welded steel skull mask, exposed hydraulic jaw, and rusted cybernetic arms. Volumetric supercell storm backdrop with lightning-lit sandstorms. Design fuses George Miller's dystopian grit with H.R. Giger's biomechanics: oil-leaking pistons, glowing subdermal vents, and HUD-equipped bionic eyes showing ammo/radiation stats. Golden ratio composition highlights battle-ready stance against heat-haze horizons. Rendered with nanite geometry for lifelike textures (bullet dents, frayed cables), real-time sand abrasion, and dynamic cloth physics on tattered cape. Post-processed with ARRI film grain, dieselpunk LUT, and thermal distortion. Tags: #CyberHorror #CharacterDesign #DieselPunk.