Create a Roblox-style 3D model of a final evolved spirit named "Abyss King" (암흑왕). Design a majestic yet terrifying dragon spirit shrouded in deep black scales and crimson shadows. Its body should be long and powerful, with sharp edges and horns, wrapped in dark red energy that pulsates like fire. The wings should appear torn or skeletal, formed from glowing crimson void energy. Add an aura of black mist and flickering blood-red flames surrounding its body. Eyes should glow with intense red light, and dark crimson veins should pulse across its chest and neck. Use only black, dark gray, and glowing red — avoid purple entirely. Model should look ominous and regal, perfectly optimized for Roblox.