An ethereal sculptural representation of a demonic female angel named Rucifer, embodying elements of gothic and baroque artistry, stands resplendent in a vast gothic cathedral. She is adorned in a flowing veil dress, her six elongated wings exuding an aura of fallen grace, underlined by a mysterious, shadow-infused halo. The sculpture, meticulously crafted with an emphasis on intricate detailing and a low contrast aesthetic, resonates with the visionary style of Guillermo del Toro. Presented in a full-body portrait, her presence is rendered with hyper-realistic precision, utilizing Zbrush for sculpting finesse and capturing epic perspective with octane render techniques. The scene is illuminated by volumetric light and cinematic nuances, revealing a composition defined by photorealistic detail and the dramatic atmosphere of Unreal Engine 5's capabilities. The 8k render showcases her as a masterpiece of art sculpture, her form partially composed of bone, reflecting ultra-detailed precision while adhering to the rule of thirds. Set against the backdrop of a dark epic scene, the planet Earth glows softly from behind, casting an ethereal glow that enhances the sculpture's otherworldly majesty.