The main character is Naruto for sure. His journey from the Hidden Leaf Village to Poison Ivy's world is what the story could revolve around. Poison Ivy herself is a key character as she brings her own set of rules and powers. In the harem part, Hinata could be included. Her shy but determined nature would contrast with Poison Ivy's more assertive personality. Tenten could also be a character in the harem. Her weapon skills might come in handy when dealing with threats in Poison Ivy's plant - filled world.
Obviously Naruto would be one of the main characters. He has a strong personality and unique abilities that would make him stand out in this crossover. Poison Ivy would also be a main character as she is the central figure in her own world. From Naruto's world, Sakura could be part of the harem. She is strong - willed and her medical skills could be useful. Another could be Ino. She has her mind - related jutsu which could create interesting interactions with Poison Ivy's plant - controlling abilities.
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.
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.
Batman and Poison Ivy are the central figures. Batman is known for his detective skills and physical prowess. Poison Ivy, on the other hand, is a character deeply connected to nature. In the fanfiction, they might be presented in different lights. For example, Batman could be shown with a more vulnerable side when dealing with Poison Ivy's charms, and Poison Ivy might have some redeeming qualities that come out during their encounters.
At first, Naruto might be a bit wary of Poison Ivy because of her different appearance and powers. But as she shows kindness and starts to teach him about plants, he'd warm up to her. Poison Ivy, on the other hand, would be intrigued by Naruto's chakra and his ninja abilities. They'd start to exchange knowledge. Naruto could show her how to move stealthily like a ninja, and she could teach him how to make plants do his bidding in combat. As time goes on, they'd form a strong bond, like a real mother - son relationship.
The Joker could be a great antagonist. He might be jealous of Batman's new relationship and see it as an opportunity to cause chaos. He could try to drive a wedge between Batman and Poison Ivy, using his mind games and unpredictable nature to create misunderstandings and conflicts within their marriage.
Well, it might involve Naruto growing up with Poison Ivy's influence. Maybe he learns some unique plant - based combat skills from her. He could also develop a different perspective on nature compared to his original upbringing in the Naruto world.
One possible plot could be that Naruto is on a mission and gets transported to Poison Ivy's world. He has to figure out how to get back while dealing with Poison Ivy's attempts to use him for her own ecological goals. Maybe she sees his chakra as a new form of energy she can harness.
The central character is Poison Ivy. However, depending on the plot of the graphic novel, characters such as Harley Quinn might show up. Harley and Ivy have a complex friendship in the DC world. Also, we might see some of Gotham's police force characters as they deal with the situations Ivy creates. And in some versions, other supervillains or even some of the more nature - based heroes could make an appearance.
Maxine Gibson would be a great supporting character. Her tech - savvy skills could be crucial in helping Batman Beyond figure out how to combat Poison Ivy's new plant - tech hybrids. Another could be Commissioner Barbara Gordon. With her years of experience dealing with Batman and his rogues gallery, she can offer valuable advice to Terry. Also, Ace, the dog, could play an interesting role. Maybe he has some sort of special ability that can detect Poison Ivy's plants before they cause trouble.
Naruto would likely have to get used to living among plants. He might start to learn how to communicate with them, just like Poison Ivy does. For example, he could learn to sense when a plant needs water or is under threat. He would also have to adapt to her more anti - social tendencies towards humans, which could be a real struggle for Naruto, who values human connections.