Well, perhaps Harley Quinn is kidnapped by a Marvel villain who wants to use her unique skills for his own evil plans. Let's say it's Loki. He brings her to the Marvel universe. Harley, of course, doesn't take kindly to being used. So she escapes and teams up with the Guardians of the Galaxy. They travel across different planets in the Marvel cosmos to stop Loki's master plan. Along the journey, Harley has to adapt to the strange new world of the Guardians, and there are lots of funny exchanges as she tries to understand their ways and they try to understand her.
In a plot, Harley Quinn could be an accidental creation of some Marvel - based science experiment gone wrong. She wakes up in the Marvel universe with no memory of how she got there. The Fantastic Four take her in to figure out what's going on. As she starts to regain her memories, she realizes she has to stop a mad scientist in the Marvel universe who is trying to replicate the experiment that brought her there, but this time on a much larger and more dangerous scale. So she teams up with the Fantastic Four and other Marvel heroes to stop this threat.
One idea could be that Harley Quinn somehow gets transported to the Marvel universe. Maybe she teams up with Deadpool. They both have a crazy and unpredictable nature, so their interactions would be really interesting. They could go on a wild adventure fighting against some common enemy like Doctor Doom who is trying to take over both their worlds or something.
The plot could involve a threat that requires the combined efforts of both universes. Maybe an ancient evil that can only be defeated by the unique powers of Naruto characters and the technology and superpowers of Marvel heroes. For instance, a villain who can absorb all forms of energy is threatening both the ninja world and the Marvel universe. Naruto and his friends team up with the Avengers to stop this threat. Along the way, they have to learn to work together, which could lead to some interesting character interactions, like Naruto trying to understand Stark's high - tech gadgets or Thor explaining his Asgardian magic to the ninja.
A Naruto Harley Quinn crossover fanfic might start with some kind of interdimensional rift that brings Naruto into Harley Quinn's world. Naruto, with his strong sense of justice, would likely be confused by the chaos and the different moral code in Gotham. Harley Quinn, on the other hand, would probably find Naruto's powers and his naivete quite interesting. She might try to use him for her own gain at first, but as the story progresses, they could develop an unlikely friendship. The fanfic could also explore how Naruto's ninja techniques would be perceived in the world of Batman and his rogues gallery. For instance, his shadow clone jutsu could be a real head - turner. And Naruto would have to adapt to the more modern and gritty setting of Gotham compared to his own feudal - like shinobi world.
Well, in a Naruto x Harley Quinn fanfiction, it could start with Harley Quinn somehow ending up in the Naruto universe. Naruto would see her as an interesting and strange new character. Since Harley has her own set of skills like her acrobatics and combat with her mallet, she could learn some ninja techniques from Naruto. They could then go on adventures together, like exploring new parts of the Naruto world or trying to find a way to get Harley back to her own universe.
A Batman and Harley love story could be a wild ride. Picture Harley's zany antics and Batman's stoic nature clashing at first. But then, as they get to know each other better, Harley could show Batman a different side of Gotham, the more chaotic and fun side. Batman, in turn, could offer Harley stability and a chance at a normal life. It would be a story of two very different souls finding common ground and falling in love despite all odds.
It would be a wild ride. Harley's zany personality would clash with Batman's brooding nature. There would be moments of intense attraction and repulsion. Maybe Harley would try to win Batman over with her charm while Batman would be hesitant, constantly torn between his feelings and his sense of duty.
It would be a wild ride. Harley, with her zany and unpredictable ways, would constantly challenge Batman's stoic nature. They might start as adversaries, with Harley trying to play tricks on Batman. But gradually, they could develop feelings. Batman would have to come to terms with his attraction to someone from the criminal side, and Harley would have to learn to be part of the 'good' side.
Well, it could be a story where the wizarding world and Gotham's criminal underworld collide. Harry Potter and his pals are trying to keep the magical world a secret, but Harley Quinn's antics draw unwanted attention. She might even try to steal some of the magical artifacts from Hogwarts to use as weapons or toys in Gotham. It would be a battle of wits and powers as they try to stop her or, in an unexpected turn, work with her.
A Deadpool and Harley Quinn crossover fanfiction might involve a love - hate relationship. They both have unique personalities. Deadpool could initially annoy Harley Quinn with his constant chatter, but then they find common ground in their disregard for the norm. They could end up on a quest for some strange object that has power over both their worlds, like a magical joker card that also gives Deadpool the ability to control time or something equally wacky.
No, Harley Quinn is not in Marvel Comics. She is a character associated with DC Comics.