Harley Quinn is a popular American superhero character in the DC Comics universe. She first appeared in the Batman: The Animated Series episode "Joker's Favor" in 1992. Since then, she has gained immense popularity and has been featured in various comic books, animated series, and live-action films.

Harley Quinn has been portrayed by various actresses in live-action films and TV shows. The most notable portrayal is by Margot Robbie in the DC Extended Universe (DCEU) films, including Suicide Squad (2016), Birds of Prey (2020), and The Suicide Squad (2021). Her performance as Harley Quinn received widespread critical acclaim.

Harley Quinn, whose real name is Dr. Harleen Frances Quinzel, was created by writer Paul Dini and artist Bruce Timm. She was originally designed as a one-off character but became a recurring character in the Batman: The Animated Series. Her popularity grew rapidly, and she became a fan favorite among comic book enthusiasts.