In a notable twist on DC lore, Harley is shown to be the one who inadvertently gives Harvey Dent his "Two-Face" moniker.
Harley Quinn S02E06 "All the Best Inmates Have Daddy Issues" [S2E6] All the Best Inmates Have Daddy Issues
The episode reveals that Harley also met Poison Ivy on that same day at Arkham, marking the true beginning of their friendship. In a notable twist on DC lore, Harley