Don and Hank Hall were brothers with differing outlooks on life and politics. Whereas Don was more reasonable, peaceful, and indecisive, Hank was hot-headed, warlike, and impetuous. Don was granted super strength and speed by the Lords of Order who chose him as an agent while Hank was given the same powers by the Lords of Chaos, who also chose him as an agent. Both were transformed into an embodiment of their philosophies, the Dove and the Hawk, respectively. They used their powers as vigilantes, working as a Yin Yang to find balance between their extremes.