Futuristic demon mecha warrior in heavy armored suit

Futuristic humanoid demon mecha armor, heavy armored suit, bulky layered metal plates, angular design, mechanical joints with visible pistons and hydraulics, dark visor helmet with intimidating elongated mask, small demonic wing extensions on back, integrated energy cannons on forearams with glowing blue light, engraved demonic runes and mystic symbols on armor plates, steel gray and carbon black metallic textures, silver reflections, purple and cyan energy glow accents. Cinematic concept art style, sharp detailed linework, dramatic hard lighting from upper left, deep shadows, strong contrast, polished metal highlights, dynamic hero stance, centered composition, dark atmospheric background, ultra detailed, 8k resolution, digital painting, sci-fi fantasy mecha design, video game character concept