A highly detailed 8k ultra-realistic portrayal of a menacing demon inspired by the Night King from Game of Thrones, created in the style of George R. R. Martin. The creature stands in cinematic glory, adorned in intricate armor that glows with a mesmerizing blend of purple and blue neon. The armor is finely crafted and ornate, reflecting a sense of ancient power and mystery. The scene is captured with dramatic cinematic lighting that highlights the demon's terrifying features, bringing a hyperrealistic focus to its chilling presence. This artwork, trending on ArtStation, showcases high detail using Unreal Engine 5, capturing the otherworldly essence of the creature. Set against a dark, atmospheric backdrop, the 4k resolution image emphasizes the contrast between the glowing armor and the surrounding shadows, delivering a deeply immersive visual experience.