- Hand-to-Hand Combat (Advanced)
- Indomitable Will
- Baseball bat
- Harley Quinn was created by Paul Dini and Bruce Timm, first appearing in "Joker's Favor". However, in the Old Lady Harley continuity, her first appearance was in Harley Quinn Vol 3 42, by Frank Tieri.
- 7 Appearances of Harleen Quinzel (Old Lady Harley)
- 12 Images featuring Harleen Quinzel (Old Lady Harley)
- 1 Quotations by or about Harleen Quinzel (Old Lady Harley)
- Character Gallery: Harleen Quinzel (Old Lady Harley)
|Justice League member|
This character is or was a member of the Justice League of America, or the Justice League in any of its various incarnations, sworn by a duty to act as guardians of America and the world by using their skills and/or superpowers to protect Earth from both interstellar and domestic threats.