She has an African Connect

In the ancient Africa, a warrior created a totem that allowed him to harness powers of animal kingdom. He went onto become first African superhero. She lived in the same village as him.

She lost her mother at an early age

Vixen grew up without a mother as she was killed by a group of poachers, she was raised by Reverend Richard of her village. He had the possession of the Tantu totem, later he was killed by his own brother General Maksai who was after the totem.

She went to America only to come back to Africa

She wasn't aware of the power of totem and why reverend’s brother was after it so desperately. So she went to America for a normal life, did well and became a businesswoman. When she came to know about totem, she returned to her village, took it from her uncle and became Vixen. 

She was part of Justice League of America & Suicide Squad

She joined JL for a brief period and fought Amazo, then she served in Suicide Squad for a little while, rejoined JLA at the time of Infinite Crisis.

She is one of the most powerful females DC Superhero

There is of close Amazonian Goddess Wonder-woman who can come close to her in terms of superpowers, in one of DC comics storyline she started leeching off powers of super-humans around her, in this state she can mimic meta-human powers of Flash, Kryptonian powers of Superman or Archery skills of Arrow.