Bio: When Joker and Harley kidnapped Robin to torture and turn
into a mini-Joker, Harley and Batgirl faced off for the last time.
Harley tripped and fell into a deep chasm in the now-destroyed Arkham
Asylum, seemingly plummeting to her death.
Though they never found her body, Harley survived the fall and later
went off to lead a normal life. We last see her bailing her grandkids,
Delia and Deidre Dennis, from jail after their involvement with the
Joker’s latest return. After a small speech from Harleen, the twins quip
“Shut up Nana Harley”, to which Harley replies: “Break your
grandmother’s heart! I hope they throw the book at you!”