Well, perhaps a plot where an interdimensional rift brings Harley Quinn into Spider - Man's universe. At first, Spider - Man thinks she is a new threat. But Harley is just as confused. As they figure out what happened, they discover that a mad scientist in Harley's universe and one in Spider - Man's universe have joined forces to create this rift for their own evil purposes. So, Harley and Spider - Man have to work together to close the rift and stop the scientists. Along the way, they learn from each other's strengths and weaknesses and form an unlikely bond.
There are some. You could try searching for them on platforms like Wattpad too. The interesting part about Harley Quinn x Spider - Man fanfics is how the writers blend their very different personalities. Harley's chaotic and unpredictable nature with Spider - Man's sense of responsibility makes for some really engaging storylines.
A plotline might involve a magical accident that merges the two universes. Naruto and Harley Quinn are forced to work together to separate the universes again. Along the way, Naruto could teach Harley Quinn about the value of friendship and loyalty, while Harley Quinn shows Naruto how to be more spontaneous. Or perhaps Harley Quinn is being hunted in the Naruto world by some ninja who mistake her for a dangerous threat, and Naruto has to protect her.
One idea could be that Spider - Man and Harley Quinn team up to take on a common enemy in Gotham. Maybe a new villain who has a technology - based power that's affecting both New York and Gotham. Spider - Man's acrobatic skills and web - slinging combined with Harley Quinn's unpredictability would make for an exciting dynamic.
A plot might involve Harley Quinn getting amnesia. Batgirl finds her and decides to help her. In the process of trying to help Harley regain her memory, they form an unlikely bond. But as Harley's memory starts to come back, she remembers that she has a score to settle with some of Gotham's criminals, and Batgirl has to decide whether to support her or stop her.
One common theme is the clash of personalities. Harley Quinn is wild and unpredictable, while Spider - Man is more of a responsible hero. So, a lot of fanfictions explore how they deal with their differences.
A possible plot could be that Harley Quinn's sister is an undercover agent sent to infiltrate the criminal underworld of Gotham. She ends up getting involved with Harley and the Joker. As she gets closer to her sister, she realizes that Harley is more than just a crazy villain. She then tries to find a way to get Harley out of the criminal life while also dealing with Batman's suspicions of her true motives.
One possible plot could be that Harley Quinn discovers she's pregnant and tries to hide it from the Joker, fearing his reaction. Meanwhile, Batman somehow gets wind of it and feels a sense of responsibility to protect her, not just for the baby's sake but also because he realizes Harley is in a very vulnerable state.
Well, the plot could involve Harley Quinn and the Joker having an unexpected pregnancy. It could show how their relationship changes. The Joker might initially be dismissive or even angry, thinking it'll disrupt his plans. But Harley could be determined to have the baby and try to make the Joker understand the importance of family, or at least her version of it. There could also be a lot of drama with other villains or heroes reacting to the news of Harley being pregnant.
Well, perhaps in the fanfic, Harley Quinn has kidnapped someone important, like a scientist who was working on a new technology that could be dangerous in the wrong hands. Batgirl hears about it and goes to confront Harley. There's a series of battles where Harley uses her acrobatic skills and her signature mallet, while Batgirl uses her gadgets and martial arts. In the end, Batgirl manages to rescue the hostage and send Harley back to Arkham Asylum.
A plot could involve Robin being kidnapped by one of Harley Quinn's old associates who has a vendetta against her. Batman and Harley Quinn then have to work together to rescue Robin. During the rescue mission, Harley Quinn starts to see Batman in a new light and realizes that his way of fighting crime might be more noble than she initially thought. Meanwhile, Robin, while being held captive, manages to outwit some of the captors, setting up an exciting climax when Batman and Harley arrive.