Source: bleedingcool.com

6. Batgirl/Oracle (Barbara Gordon)

Resilient, fun, and brilliant, Barbara Gordon had everything.

When Barbara's parents were killed, her Uncle Jim adopted her, and she moved in with him in Gotham City. Babs was obsessed with superheroes, especially Gotham's own Batman. Using her photographic memory, she picked up skills in detective work and martial arts, seemingly intending to become a police officer like her uncle.

But Barbara had a different plan. Annoyed at her dad, Babs decided to show up at a costume party dressed as Batgirl, her own feminized version of Batman. When she got there, however, Killer Moth was terrorizing the party. Which, I mean, duh. You hold a masquerade ball for the police in Gotham City, you’re lucky the only supervillain who shows up is Killer Moth.

But Barbara kicked KM's butt, and claimed her new career as one of Batman's best sidekicks. I would argue the best, but that's not what this list is for.