Perhaps in the fanfiction, Poison Ivy has developed a new type of plant toxin that can neutralize Batman's gadgets and physical abilities. For example, it could corrode his Bat - suit and make his grappling hook malfunction. Without his usual tools and skills, Batman would struggle and ultimately lose to her devious plans.
One possible plot could be Poison Ivy using her plant powers to create a special lemon - like plant that has an effect on Batman. Maybe it makes him see illusions of a different Gotham, and he has to fight his way through this strange new world while also dealing with Poison Ivy's motives for creating it.
Well, clearly Batman and Poison Ivy are the main characters. Batman is the caped crusader who is usually victorious but in this fanfiction loses. Poison Ivy is the plant - loving villainess who manages to defeat him.
One interesting storyline could be Poison Ivy trying to convert Batman to her environmentalist views. She might use her powers to show him a future where Gotham is destroyed by pollution and convince him that her extreme methods are necessary. Another could be a story where Batman has to rescue Poison Ivy from a more dangerous villain who wants to use her powers for evil. This would put them in an unexpected alliance situation.
A plot could be that Poison Ivy is wrongly accused of a crime she didn't commit. She has to clear her name while also dealing with the other villains who see this as an opportunity to take advantage of her. Batman, initially believing she's guilty, starts to have doubts as he investigates further. This would add a layer of mystery and character development for Poison Ivy.
A cool plot could be that Ben 10's Omnitrix malfunctions near Poison Ivy. This causes some of his alien DNA to mix with her plant - based essence. As a result, they both gain new and strange powers. They then have to figure out how to control these powers while also dealing with villains who want to use this new situation for their own evil plans. Or, there could be a story where Poison Ivy is initially suspicious of Ben 10 because of his alien nature. But when she sees how he respects nature in his own way (through his alien forms' relationships with different environments), she warms up to him. Together, they could go on a journey to save a forest that is being destroyed by a powerful and greedy corporation. Ben 10 uses his strength and agility as different aliens, and Poison Ivy uses her plants to slow down the corporation's machines and workers.
The kiss could be part of a mind - control scenario. A villain has taken control of Poison Ivy and made her target Batman. But during the kiss, Batman manages to break through the mind control briefly. This leads to a moment of connection between them, and afterwards, they have to work together to defeat the real villain behind the mind - control plot.
One interesting plotline could be Poison Ivy trying to reform Batman to see the world from her ecological perspective. She might use her powers over plants to show him the beauty and importance of nature, and Batman has to decide whether to side with her ideas or stick to his own sense of justice.
Well, in fanfiction about their romance, the power struggle is a cool part. Batman is a powerful figure in Gotham, but Poison Ivy has her own unique powers over plants. Their relationship can be seen as a battle of wills as well as a love story. Sometimes, fanfic writers will have them team up against a common enemy, and during this time, their romantic feelings start to develop. It shows how they can find common ground in their goals while also dealing with their personal feelings for each other.
One interesting plot could be that Naruto, with his unique abilities, enters Poison Ivy's world. He tries to understand her powers over plants and how they can be used for good. In the harem aspect, other characters from Naruto's world might be brought in, like Sakura and Hinata. They all have to learn to co - exist with Poison Ivy and her plant - based ecosystem. Maybe they work together to protect a forest that is being threatened by some dark force.
A possible plot in Poison Ivy vs Batman fanfiction is that Poison Ivy creates a massive garden in the middle of Gotham that starts to overtake the city. Batman is torn between respecting her love for nature and protecting the city. He tries to negotiate with her, but she refuses to budge. This leads to a series of battles and chases as Batman tries to find a way to either relocate the garden or find a compromise. Another idea could be that Poison Ivy discovers Batman's secret identity and uses it to blackmail him into helping her with her environmental goals, which Batman resists, creating a tense stand - off between them.