Harley Quinn (real name Harleen Quinzel) is a major antagonist in the DC universe, first appearing in Batman: The Animated Series, as the girlfriend and partner-in-crime of the Joker, and by extension one of the great enemies of Batman. Aformer psychiatrist, Harley Quinn adopts a jester outfit, and a villainous persona, while constantly hitting on the Joker on numerous occasions. An agile and strong fighter, Harley Quinn has been an official member to many villainous organizations, including the Secret Society of Villains, the Secret Six, the Suicide Squad, and various others. She is a secondary player in the Non-Disney vs. DC Villains War.
Non-Disney Vs DC Villains War
Vs the Gangreen Gang
At some point in time, Harley Quinn, and her fellow partner, Poison Ivy, challenge the Gangreen Gang, as their antics constantly bother the two women. At first glance, the Gangreen Gang mocks the women, only for Harley Quinn and Poison Ivy to reveal their skills and abilities, besting every single member of the gang, save only Ace for last. Before Ace would even react, Poison Ivy knocks out the Gang's leader with a powerful punch, taking him out easily.
The Trio of Villainesses
Later, Harley Quinn, Poison Ivy, and their new addition, the Livewire, meet at an iceberg lounge, disccusing about the control of the criminal empire to their own hands.