Barbara Gordon (Earth-9)

Commissioner Barbara Gordon is the former vigilante known as Batgirl and the commissioner of the GCPD.

Batgirl
At some point, Barbara Gordon became the vigilante Batgirl and worked alongside Batman and Robin.

Later, Barbara met Jason Todd, the new recruit for Robin after Dick's leave to be more independent.

Death of Robin
In 2020, Barbara met Dick Grayson once again after Jason Todd's death. They then visited Bruce Wayne, talked about their past as vigilantes and demanded Bruce not to recruit a new kid as Robin. As the conversation grew tense, Barbara left and told Dick to prevent another Robin from happening.