Design a model of Fenrir, the giant wolf, with dark gray, thick, and dense fur, exuding a wild, fierce aura. His eyes glow red with intensity, and sharp fangs are visible. Fenrir’s muscular body bears scars across his face and body, reminiscent of countless battles. He stands in a powerful stance, one paw raised, with broken chains around his neck and legs, symbolizing freedom and unstoppable strength.