A breathtakingly detailed 8k ultra-realistic depiction of a chilling demon inspired by the Night King from Game of Thrones, conceptualized by George R. R. Martin. This full-body image showcases the demon clad in intricate neon armor with a mesmerizing blend of purple and icy blue hues. The armor is ornately designed, reflecting a ceremonial elegance in its patterns. The scene is illuminated with dramatic cinematic lighting that casts eerie shadows, heightening the sinister ambiance. This hyperrealistic representation is captured with sharp focus and high-definition details, reminiscent of visuals crafted in Unreal Engine 5. The composition promises to be popular on art platforms, emphasizing its substantial resolution and cinematic allure.