A photorealistic image of a zombie Roman centurion standing in a foggy, desolate battlefield at dusk. His battered centurion helmet is slightly askew, revealing patches of decayed flesh and glowing green eyes that pierce through the mist. He wears a tattered red cloak, clinging to his rusted and damaged armor, which bears the marks of countless battles. In his skeletal hand, he firmly grips a glowing green gladius, the energy from the blade casting an eerie light across his decaying face. The sword is clearly held with purpose, not just attached, as his bony fingers curl around the hilt. The surrounding battlefield is strewn with remnants of fallen warriors, and faint green wisps of energy rise from the ground, adding to the supernatural atmosphere. The overall scene is dark and atmospheric, with intricate details on the armor, cloak, and weapon. 4K, masterpiece quality