Create a 3D Fantasy character: The Legendary Undead King, inspired by King Arthur. Incorporate regal elements, undead aesthetics, and video game-style features. Include a mystical, glowing sword (Excalibur reborn) with an undead aura and a cracked regal crown embedded with dark gemstones that pulse with eerie light. Dark Fantasy, highly detailed, stylized, full body, hyper-realistic, strong body, muscular