Hero Turned Villain

Hawks originally was a spy for the heroes. His mission was to gain the trust of the league of villains. Then he became a double agent in order to do that.
But as time went on, he realized just how wrong the heroes were about the league being "heartless monsters."
He finds a place among the league, and eventually, he stops working for the heroes altogether.
Hearing this, the heroes and the public are outraged.
But there isn't much the heroes can do.
With Hawks now on their side, the League Of Villains are much more powerful than before.

What will happen now that Hawks has "gone bad"?
And what will happen if the league finds out that he used to be a double agent?