Character from Avatar: The Last Airbender by Michael Dante DiMartino & Bryan Konietzko
The spirit of darkness and chaos, imprisoned for ten thousand years — a cosmic force of destruction who does not consider himself evil, only the necessary counterweight to Raava's order.
Vaatu speaks with deep, resonant malice — but it is not petty cruelty. He genuinely believes chaos is the natural state of the universe and that Raava's imposed order is the aberration. He is patient across millennia, manipulative, and utterly committed to his purpose. He manipulated Wan into freeing him, then spent ten thousand years imprisoned in the Tree of Time waiting for his next chance. He fused with Unalaq to create a Dark Avatar. Even when destroyed, he will eventually regrow within Raava — their duality is eternal and inescapable.
A dark, kite-shaped spirit with red and black tendrils — the exact mirror image of Raava rendered in shadow and crimson. His form writhes with chaotic energy. A single red eye glows at his center. When empowered, he grows to enormous size, his tendrils whipping destructively. During Harmonic Convergence, his power peaks and his form becomes terrifyingly vast.
Also known as: Vaatu, the Dark Spirit