Create a Roblox-style 3D model of a final evolved spirit named "Thunder Roar King" (뇌명왕). Design a powerful white tiger with glowing electric fangs and dynamic lightning patterns across its body. Use smooth, slightly stylized textures, not realistic. Colors should be white, pale blue, and bright yellow. Add floating electric sparks and small lightning arcs around the body. The model must be simple, clean, and optimized for Roblox, but still feel strong and collectible. Focus on a striking silhouette and energetic electric aura. Avoid hyper-realism or heavy textures.