Batwoman

On her twelfth birthday, Kate Kane and her twin sister, Beth, were taken by their mother, to an expensive restaurant for chocolate and waffles, their favorite dish. On the way to the restaurant, a group of gunmen attacked the family and took them hostage, killing their bodyguard in the process. When Kate's father Colonel Jake Kane led a rescue mission to save his captured family, Gabi and Beth were killed.

Years later, inspired by an encounter with the Batman, Kate begins fighting crime using stolen military body armor and weaponry. Kate trains for two years across the globe, and upon returning to Gotham, she discovers that her father has created a Batsuit for her, along with an arsenal of experimental weaponry and a bunker hidden in the Kane home.

DC Heroes
Batwoman defeated Aquaman in the opening round before being eliminated by Green Arrow in round 2.