Rhaegar Targaryen. His story was full of mystery and tragedy. In the fanfic, his return could stir up a lot of emotions. He might have different views on things compared to other Targaryen. Also, his relationship with other characters like Elia Martell and Lyanna Stark could be explored further, which would add a whole new layer of drama to the story.
A 'All Targaryen Came to Life' fanfic could be full of drama. Picture this: all the Targaryen suddenly alive and in one place. There would be those who are still bitter about past betrayals. The younger Targaryen might look up to the older, more legendary ones. They would have to figure out how to coexist in a world that has changed a great deal since their time. There would be a clash of cultures between the old - fashioned Targaryen ways and the new world order. And of course, there would be a lot of plotting and scheming to reclaim their former glory.
Personally, I find Kakashi as a wolf to be the most interesting in a fanfic context. Wolves are known for their intelligence and their pack - oriented nature. Kakashi is a very intelligent character, and seeing him lead a 'wolf pack' of his comrades would be really cool. He could use his wolf - like instincts to strategize and protect his pack, just as he does with his friends in the Naruto series.
Akira and Minato would be an interesting pairing. Akira, with his leadership skills as the leader of the Phantom Thieves, and Minato, the protagonist of Persona 3, could share their strategies in combat and dealing with the Metaverse. They both have different experiences with their respective groups, so they could learn a lot from each other.
Naruto and Kenichi himself would be really interesting. Kenichi could be in awe of Naruto's power and his never - give - up attitude. Naruto could see Kenichi's determination to improve in martial arts and be reminded of his own journey to become a great ninja. They could train together, with Naruto teaching Kenichi some basic ninja moves like how to throw shuriken accurately, and Kenichi teaching Naruto some martial arts stances.
I think being reincarnated as Loki would be super interesting. He's such a complex character with his own motives and schemes. You could take over Loki's life at a certain point and use your modern - day knowledge to either further his plans in a different way or completely change his path. Maybe you could prevent him from getting into so much trouble with Thor and the Avengers, or use his shapeshifting abilities in ways that no one in the Marvel universe has ever seen before.
Ruby and Dallas would be really interesting. Ruby's energetic and somewhat naive nature could contrast well with Dallas' more grizzled and experienced personality. They could learn from each other during heists, with Ruby teaching Dallas about the power of Semblances and Dallas showing Ruby some of the more underhanded tricks of the trade.
I think Voldemort would be the most interesting. We rarely get to see his perspective in the original series. In a fanfic where Harry talks to him, we might get to see a more complex side of Voldemort. Maybe he'll show some vulnerability or a different motivation than just pure evil. It could be really fascinating to see how he reacts to Harry's words and if he is capable of any change.
I think Ruby would be really interesting if she took on Weiss's role. Ruby is so used to being the free - spirited leader, but as Weiss, she'd have to deal with all the expectations and formalities that come with being an heiress. It would be a huge change for her character and would force her to grow in different ways.
Iruka sensei could be a great character. He could use coffee as a way to bond with Naruto and the other students. In the fanfic, he could introduce them to different types of coffee from around the world (in the Naruto universe), and through these coffee - related lessons, teach them important life lessons as well.
I think Rock Lee would be really interesting. His extreme dedication to training and his unique fighting style would be a great contrast to the often chaotic and self - serving characters in the GTA world. He could run around the GTA streets, challenging the thugs to combat and trying to uphold his ninja code in a very different and morally ambiguous environment.