A highly detailed digital illustration of Lupus Rex, the Eidolon of Belle reimagined as the protagonist of Final Fantasy XIII, set in a dramatic Gran Pulse ruin with crumbling stone arches and glowing crystal formations under a starry sky. Lupus Rex is a towering, humanoid beast, standing 12 feet tall, resembling the Beast from Beauty and the Beast with a massive, muscular frame covered in thick, dark brown fur streaked with gold. His head is adorned with large, curved horns, and his face features a lion-like muzzle with sharp fangs, scarred from past battles, and piercing amber eyes that glow with a mix of ferocity and sorrow. A mane of wild, flowing fur frames his face, interwoven with rose-like patterns that shimmer faintly with crimson light. His clawed hands are oversized, capable of crushing stone, yet one hand gently cradles a glowing rose-shaped crystal, symbolizing his bond with Belle. Tattered, dragon-like wings with golden scales extend from his back, blending primal and fantastical elements. His tail is long and tufted, tipped with a pulsing rose crystal. Lupus Rex stands in a protective, hunched stance, one claw raised as if ready to unleash an earth-shattering roar, with cracks forming in the ground beneath him. Swirling rose petals and faint magical runes glow in the air, tying him to Belle’s motif. The color palette emphasizes dark brown, gold, crimson, and black, merging the Beast’s iconic look with Final Fantasy XIII’s futuristic, luminous style. The See more