Bio: She operated under various aliasses in the past and was always a criminal. Eventually, Barbara infiltrated ARGUS and worked closely with Steve Trevor and Wonder Woman, when Diana had just come to the "World of Men". Barbara faked a friendship with Diana to become more important at ARGUS and become the "go-to" person concering mystical artifacts they had discovered. Eventually, Barbara stole a dagger called "the Godslayer" and cut herself, transforming herself into the powerful Cheetah.
It was revealed that the Cheetah was a good person in the past and a savior of an ancient tribe, but Barbara had corrupted the entity and it had become as evil as her. After a seeming defeat by the Justice League, Barbara was revealed to be working for a secret society and now awaits her time to take down the League perminately.