"Design a vampire necromancer in a dark fantasy anime style, set in a sci-fi post-apocalyptic world. This character has a tall, thin, and ghostly appearance, with long white hair flowing behind him and piercing red eyes that glow faintly. His attire combines a dark, flowing cloak with futuristic armor pieces that seem almost organic, with intricate designs resembling bone and circuitry. His hands are skeletal, and he holds a sinister staff topped with a dark crystal that pulses with ominous purple light. His skin is pale, almost translucent, and his expression is cold and malevolent, with fangs visible in a slight smirk. The color palette should include deep purples, blacks, and silvery grays, enhancing his supernatural aura. The background depicts a haunted, twisted landscape with shadowy ruins and lightning streaks across a dark sky, giving him an aura of dread and mystery."