A sinister fairy with dark, menacing wings lurks in the shadowy woods, her piercing emerald eyes glowing ominously. The forest is shrouded in a thick, otherworldly fog, enhancing the eerie, demonic presence she exudes. Her appearance is unholy and spine-chilling, with an intricate, detailed design that captures the horror and darkness of her essence. The dramatic lighting casts an unsettling aura around her, highlighting her photorealistic and cinematic features, as if plucked from a nightmare. The overall scene is captured in stunning 8k resolution, emphasizing the terrifying beauty of this malevolent creature.