Hawk was an agent of Chaos along with her sister Dove, who is an agent of Order. The original Hawk, Hank Hall, went insane and was replaced by Holly Granger as the new Hawk. However during Blackest Night, Holly was killed when Black Lantern Hank Hall ripped out her heart.

Holly Granger

Hawk was an agent of Chaos along with her sister Dove, who is an agent of Order. The original Hawk, Hank Hall, went insane and was replaced by Holly Granger as the new Hawk. However during Blackest Night, Holly was killed when Black Lantern Hank Hall ripped out her heart.

All data from the awesome folks at Marvel.