If Naruto becomes a Joker fan in the fanfiction, his new look could be really different. He would probably ditch his orange jumpsuit for something more in line with the Joker's style. A long, tattered purple coat perhaps, with some dark makeup around his eyes to give him that menacing look. His shoes could be replaced with some clown - like shoes, and he might carry around a few 'joker - ish' accessories like a deck of cards or a fake flower that sprays water. His overall appearance would be a blend of his ninja - like physique and the Joker's flamboyant and chaotic style.
If Naruto becomes like Joker in fanfiction, it would be a really strange and interesting transformation. Naruto is known for his positive and determined nature, while Joker is chaotic and unpredictable. Maybe Naruto would start to question the values of his village and act in more devious ways. His friends might be very confused and try to bring the old Naruto back.
The plot could start with Naruto being disillusioned with the shinobi world. He might see the hypocrisy and the never - ending cycle of war. This leads him to embrace the Joker's ideology of chaos. He could start by targeting the political figures in the Hidden Leaf, causing unrest. His friends would be shocked and try to stop him, but he would be too far gone.
In this fanfiction, Naruto becoming a guardian might mean he has to learn new rules and powers related to guardianship. He could start by befriending other guardians and learning from them. His journey would be about not only protecting but also understanding this new role. He might face challenges from those who don't trust a ninja in a guardian's role, but he'd prove himself with his determination and strength.
Well, the plot could involve Naruto getting tired of the shinobi life. He might start hanging out with the wrong crowd in the village, like some small - time thugs. He could use his ninja skills in illegal ways, for example, stealing valuable scrolls not for the good of the village but for his new 'gang'. His friends like Sasuke and Sakura would be shocked and try to bring him back to the right path.
His magic could be related to his chakra control. Maybe he could turn his chakra into different elements of magic, like fire magic similar to his Fireball Jutsu but with a more magical twist. For example, instead of just a normal fireball, it could be a fireball with runes inscribed on it for extra power.
In the fanfiction, the plot could revolve around Naruto being influenced by a powerful and evil organization. They manipulate him into believing that the only way to bring peace is through force and killing. As he becomes a cold - blooded killer, we would see him going against his former comrades. There would be intense battles where Naruto uses his new - found ruthless tactics. His character arc would be a dark descent from a hopeful hero to a feared killer.
Well, in this fanfiction, Naruto could start off as an outcast in the High School DxD world because of his different upbringing. However, his determination and strong will would soon attract the attention of the main characters. He could form an alliance with Issei and the others. Naruto's ability to sense danger and his combat experience would be a great asset. For example, when facing powerful enemies, he could quickly analyze their weaknesses and come up with strategies, just like he did against the Akatsuki in his own world.
Well, he might gain the power of creation. As a primordial god, Naruto could create new worlds or dimensions. He could also have the power to manipulate time, perhaps stopping it or reversing it in certain areas. And of course, his physical strength would be on a whole new level, able to effortlessly destroy mountains with a single punch.
He would definitely gain Deadshot's incredible marksmanship skills. Naruto, who was already good at aiming his Rasengan and other attacks, would now be able to use firearms with extreme precision. His new ability might also include Deadshot's stealth skills. Naruto, who was used to sneaking around in his ninja world, would now be able to blend into the shadows even better in a more urban and modern setting like Deadshot's world.
Naruto would gain Frieza's power of flight. This would be a new addition to his skill set. Also, his regenerative abilities could be enhanced similar to Frieza's. If he gets injured in battle, he would be able to quickly heal himself. His new form might also give him the ability to survive in harsh environments, like the vacuum of space which Frieza can do.