Origin

Liza Warner witnessed her two roommates being murdered by the "Killer-in-Boots". Disturbed and ashamed by the incident she found encouragement from the female officer who said she had the attention to detail and bravery of a police officer. Those words combined with her restless nights motivated her to enroll in the Police Academy to find the killer of her roommates.

At her graduation a washed up recruit decided to toss a hand grenade in the group of graduates. It was only by the intervention of Warner knocking down the recruit and tossing the grenade into a trash can that everyone's lives were spared. Warner worked as a beat cop after that and stopped many more criminals who prayed on the innocent.

Warner was later promoted to Chief of Police in Ivy Town and frequently assisted Ryan Choi - the Atom.

In a Black Label mini-series the character gets mixed up with several other heroes who are opposing Darkseid.

In Other Media

Arrow

Marc Guggenheim stated in an interview Lady Cop will be appearing on Arrow sometime this year. She will be called Liza Warner on the show. She is portrayed by Rutina Wesley (2015).

Liza Warner was a police officer originally chosen to join an anti-vigilante task force. However she believed Star City was beyond saving and went rogue along with five other members.