In Batman: Arkham City, although their love is not explored, Catwoman constantly flirts with the Dark Knight whenever they meet. Catwoman even gives up her sure escape from Arkham City to go back and help the injured Batman. A hidden radio reel reveals that Catwoman has a slight grudge towards Batman, though, since he knows her secret identity but she doesn't know his. However, by the time of the events of Batman: Arkham Knight, Selina is aware of Batman's identity as Bruce Wayne, addressing him as such after he rescues her from the Riddler.
After the introduction of DC Comics' multi-verse in the 1960s, it is retroactively established that stories from the Golden Age star the Earth-Two Batman, a character from a parallel world. This version of Batman partners with and marries the reformed Earth-Two Catwoman, Selina Kyle (as shown in Superman Family #211) and fathers Helena Wayne, who, as the Huntress, becomes (along with the Earth-Two Robin) Gotham's protector once Wayne retires from the position to become police commissioner, a position he occupies until he is killed during one final adventure as Batman. Batman titles however often ignored that a distinction had been made between the pre-revamp and post-revamp Batmen (since unlike The Flash or Green Lantern, Batman comics had been published without interruption through the 1950s) and would on occasion make reference to stories from the Golden Age. Nevertheless, details of Batman's history were altered or expanded through the decades. Additions include meetings with a future Superman during his youth, his upbringing by his uncle Philip Wayne (introduced in Batman #208, Jan./Feb. 1969) after his parents' death, and appearances of his father and himself as prototypical versions of Batman and Robin, respectively. In 1980 then-editor Paul Levitz commissioned the Untold Legend of the Batman limited series to thoroughly chronicle Batman's origin and history.
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In 1969, Dick Grayson attends college as part of DC Comics' effort to revise the Batman comics. Additionally, Batman also moves from Wayne Manor into a penthouse apartment atop the Wayne Foundation building in downtown Gotham City, in order to be closer to Gotham City's crime. Batman spends the 1970s and early 1980s mainly working solo, with occasional team-ups with Robin and/or Batgirl. Batman's adventures also become somewhat darker and more grim during this period, depicting increasingly violent crimes, including the first appearance (since the early Golden Age) of an insane, murderous Joker, and the arrival of Ra's Al Ghul. In the 1980s, Dick Grayson becomes Nightwing.
In 2010, the storyline Batman: The Return of Bruce Wayne saw Bruce travel through history, eventually returning to the present day. Although he reclaimed the mantle of Batman, he also allowed Grayson to continue being Batman as well. Bruce decided to take his crime-fighting cause globally, which is the central focus of Batman Incorporated. DC Comics would later announce that Grayson would be the main character in Batman, Detective Comics, and Batman and Robin, while Wayne would be the main character in Batman Incorporated. Also, Bruce appeared in another ongoing series, Batman: The Dark Knight.
Harley Quinn: Best known as "The Joker's Girlfriend", Harley has had occasional romantic encounters with Batman, most notably her kiss with him in the episode Harley's Holiday from Batman: The Animated Series. Recently, in the The New 52, there have been a couple of stories in which Harley became infatuated either with Bruce Wayne or Batman. These attractions appear to be entirely one-sided and Batman has shown no signs of attraction towards Harley.