Model a massive humanoid stone golem named Tharnok. He's 3x human size, made of jagged obsidian and dark granite, with glowing orange-red crystal veins running through his body. A large crystal core pulses in his chest — his weak spot. His head is helmet-like with glowing cracks instead of eyes. One arm ends in a heavy stone fist, the other is fused with a spiked crystal club. He’s ancient and battle-worn, with broken shards, cracks, and faint violet mist from corruption. Dark fantasy style, grounded proportions. T-pose, humanoid rig, game-ready.