A close-up portrait of a fearsome, green-skinned demon with a menacing expression. His horns are long and sharp, and his eyes are glowing with a malevolent fire. The image is rendered in a hyperrealistic style, with intricate details and a sense of depth. The demon's skin is textured and wrinkled, and his horns are jagged and sharp. The image evokes a sense of fear, power, and the unknown. The demon's gaze is fixed on the viewer, suggesting that he is aware of their presence and that they are in danger. The image is a powerful and evocative portrait of a creature from a dark and dangerous world.