- This version of the character is exclusive to the continuity of the film Batman vs. Teenage Mutant Ninja Turtles 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" of the series Batman.
- Harley Quinn was voiced by Tara Strong.
- Her mutated form appears to be an allusion to Bud and Lou the Hyenas, the infamous pets to the Joker and Harley Quinn.
- 1 Appearances of Harleen Quinzel (Batman vs. TMNT)
- 3 Images featuring Harleen Quinzel (Batman vs. TMNT)
- 1 Quotations by or about Harleen Quinzel (Batman vs. TMNT)
- Character Gallery: Harleen Quinzel (Batman vs. TMNT)