Harry Potter was never raised by the Dursleys. Instead, he was raised under the watchful eye and tutelage of his mother's half-sister, Dr. Harleen Frances Quinzel. When Harry finally returns to Wizarding world, he isn't quite what everyone is expecting.; AU; Dark Harry, Hermione, Luna, The Joker, Harley
Crossover - Batman & Harry Potter - Rated: M - English - Drama/Romance - Chapters: 14 - Words: 81,505 - Reviews: 567 - Favs: 2,355 - Follows: 3,028 - Updated: 3/9 - Published: 9/10/2015 - [Harry P., Hermione G.] Harley Quinn, The Joker