Margot Robbie as Harleen Gilbert aka Harleen Quinnzel aka Harley Quinn
Nina Dobrev as Elena Gilbert and
Katherine PierceJoseph Morgan as Klaus Mikealson
Jared Leto as Joker
The rest of the TVD cast as themselves
YOU ARE READING
Little One || TBD
Fanfiction*I POST ONCE A MONTH* "Harleen?" "Hiya Lena! Oh and it's Harley now! Haven't you heard?" "Last I heard you were locked up" "yeah well my friend the Joker he got me out!" "What are you doing back here?" "Would you believe me if I said I missed ya?"...