| 10 | Countdown (DC) | Origin of Harley Quinn (Harleen Quinzel); Countdown to Final Crisis |
| 10/NS | Countdown (DC) | Origin of Harley Quinn (Harleen Quinzel); Countdown to Final Crisis |
| 5 | Harley Quinn | Origin of Harley Quinn (Harleen Quinzel) |
| 5/NS | Harley Quinn | Origin of Harley Quinn (Harleen Quinzel) |
| 6 | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |
| 6-2 | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |
| 6/NS | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |
| 7 | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |
| 7-2 | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |
| 7/NS | Suicide Squad (3rd Series) | Origin of Harley Quinn (Harleen Quinzel) |