The contrast in their personalities. Spiderman is often more morally upright and responsible, while Deadpool is chaotic and wild. When combined in fanfic, especially with a female version of Spiderman, it creates a really interesting dynamic.
Their relationship could start out as rivals. Spiderman, with his more traditional heroic values, might be put off by Fem Deadpool's wild and unpredictable nature. But as they face common enemies, they would gradually develop respect for each other's fighting abilities, which could turn into a friendship.
There's 'Spiders and Mercs' which is also quite good. In this fanfic, the relationship between fem spiderman and deadpool develops gradually. It starts with them being reluctant allies and then turns into a more complex relationship with lots of action and humor along the way.
Deadpool could use his sense of humor to break through Spiderman's dark thoughts. He might crack jokes that at first annoy Spiderman but eventually start to make him see things differently. As time goes on, Spiderman could come to appreciate Deadpool's unique way of looking at life, and they could become really close friends. They could also have deep conversations in between their crazy adventures. For example, while sitting on a rooftop after a fight, Deadpool might share some of his own experiences with pain and how he copes, which makes Spiderman feel less alone.
Perhaps there could be a story where Fem Deadpool gets accidentally sent to an alternate dimension where Spiderman is a much darker and more brooding hero. She has to convince him to help her get back home while also dealing with the different threats in that dimension. It could be a story full of action and self - discovery for both characters.
Obviously, Spider - Man and Deadpool are the most popular. Spider - Man brings his sense of justice and acrobatic fighting style, while Deadpool adds his irreverent humor and unorthodox combat methods.
One common theme is the clash of their personalities. Spider - Man is often more reserved and follows a strict moral code, while Lady Deadpool is wild and unpredictable. Their differences create interesting dynamics in the stories.
One idea could be that they team up to take on a new super - villain who has the ability to manipulate time. This would put their different skills to the test as they try to stop the villain from changing the timeline in a disastrous way.
Spiderman would probably be really confused at first. I mean, Deadpool is not your typical villain. He'd likely try to talk Deadpool out of whatever crazy plan he has. He'd be using his quick wit and trying to reason with Deadpool, saying things like 'This is not the right way to do things, Deadpool.'
One possible story in a Spiderman x Deadpool Homecoming fanfic could be that Deadpool decides to crash Peter Parker's Homecoming dance. He shows up in his usual flamboyant style, causing chaos and confusion among the students. Spiderman has to both keep his identity a secret and deal with Deadpool's antics. It could be a really fun and comical take on the Homecoming event, with lots of banter between the two characters.