Harley Quinn is a villain you face during a set of missions given by Commissioner Gordon. Robin is being held captive by Harley Quinn in a mission assigned by Batman to stop The Joker from taking over a boardwalk.
- Harley Quinn was voiced by Arleen Sorkin. From Episode 24 on, she was voiced by Jen Brown.
- This version of the character is exclusive to the continuity of the video game DC Universe Online and is an adaptation of Harleen Quinzel/Harley Quinn. The original character was created by Paul Dini and Bruce Timm and first appeared in the episode "Joker's Favor".
- 3 Appearances of Harleen Quinzel (DC Universe Online)
- 1 Images featuring Harleen Quinzel (DC Universe Online)
- Quotations by or about Harleen Quinzel (DC Universe Online)
- Character Gallery: Harleen Quinzel (DC Universe Online)