>>96304673
>Since there's no black mana in the avatar state? Canonically if you count Korra as canon.
God I'm so tired of this arugement.

The Avatar (before Korra, we're treating it as noncanon) was the spirit of the world incarnated as a human. The world is everything. The entire show is about balance. Aang was capable of things associated with black, his first firebending teacher even had to warn him against pursuing firebending just to have the power to destroy his enemies. The black in Aang is just balanced out by his other qualities. In the Avatar state he would absolutely have black because it is all of his incarnations in one, and not all of them were especially moral people, literally Aang's last 4 lives all told him to kill Ozai rather than try to find another way to defeat him. If anything, Aang was at his most destructive and indifferent in the Avatar state and was frequently a danger to innocent people.

And then if you want to treat Korra as canon, Vaatu is meant to reincarnate in Raava so there's always literal evil in the avatar spirit while Vaatu is reincarnating.