A powerful demon warrior stands assertively, adorned with bright red horns and flowing green hair. She wears intricate, futuristic dark armor that highlights her form. Large, feathered wings with glowing yellow-green tips extend from her back, adding to her imposing presence. A black face mask covers her lower face, contributing to her mysterious and menacing aura. The background presents a misty, mystical environment with subtle green glows that enhance the ethereal quality of the scene.