Skull demon mystic portrait concept art inspired by Terese Nielsen, Brom, Miho Hirano, featuring hyperdetailed, intricately gothic art elements trending on Artstation. Employing triadic colors and utilizing Unreal Engine 5 for a detailed matte painting effect, set against a dark black background with an art nouveau influence. The piece explores deep, fantastical colors and intricate details, suitable for a splash screen. Emphasizing complementary colors, this artwork blends fantasy concept art with gothic deviantart sensibilities. Enclosed in an ornate border, vivid colors are presented in 16k UHD, embracing HDR10 quality for an absurdres feel. The portrait showcases a distinctive elongated neck, with extra fingers on mutated hands subtly depicted. Ensure the character retains a mystical aura with a slightly mutated appearance, bringing a unique presence to this gothic-inspired masterpiece.