Skull demon sorcerer concept art portrait inspired by Terese Nielsen, Brom, and Miho Hirano, featuring hyperdetailed gothic art with a triadic color scheme. Set against a dark black velvet background, this piece embodies the art nouveau style with deep, fantastical colors and intricate detail. Designed as a splash screen with complementary colors, it represents a fantasy concept art masterpiece trending on Artstation. Vivid colors in 16k UHD and HDR10 resolution create an absurdly high resolution (Absurdres) that elevates the artwork to a gothic deviantart triumph. The character features a surreal and otherworldly appearance, with a long neck and uniquely detailed hands, merging elements of mutation and transformation. Avoid any signs of digital distortion like watermark, logo, or text, to maintain a pristine, uninterrupted visual experience.