The Hulk is another one. His raw strength can be used to take on the toughest enemies and protect the innocents. In a fanfiction, he could be the one to break through impenetrable defenses to save someone trapped. Plus, Scarlet Witch with her reality - warping powers can create diversions or directly protect someone from harm.
Iron Man, of course. His high - tech gadgets and quick thinking make him a great savior. He can swoop in with his suit and blast away the bad guys. Also, Captain America with his leadership and combat skills is very likely to be a major character, always leading the charge to rescue those in need.
Naruto himself is the most obvious choice. His strong will and desire to protect his friends and the village make him a central figure. He could be the one to uncover the secrets of the Throne of Heroes.
Mega Evolution is a big part of the Kalos region. So characters like Diantha, the Kalos champion, could play a role. She might be observing the battles between Ash and Alain, and her presence could add pressure on them. Also, she could offer some insights into Mega Evolution that either Ash or Alain could use in their battles. Additionally, Clemont and Bonnie, who are friends with Ash, could also have some minor but important roles, like helping Ash with his Pokémon's gear or providing moral support.
Captain America could be a likely character to be betrayed. He represents the old - school values of the Avengers, and in a more modern, cynical world within fanfiction, some might see his ideals as outdated and turn against him. Also, Tony Stark. His wealth and sometimes over - confident attitude could make some of the other Avengers, especially those with more humble backgrounds, feel resentful and potentially betray him. And Thor, being an Asgardian, might be betrayed due to the other Avengers' mistrust of his alien nature or the potential threat Asgard could pose.
Tony Stark is a likely focus. His intelligence and experience with technology, especially time - travel technology in the movies, make him a central figure. He could be the one to figure out the mechanics of time travel and lead the Avengers in their time - traveling adventures.
Death from DarkSiders and Black Widow could have an interesting interaction. Death has seen countless deaths and has a very different perspective on life and death compared to the human Black Widow. Their conversations could be deep and thought - provoking as they work together on a mission.
Tony Stark is likely to be a focus. His flamboyant and playboy - like personality could lead to some really interesting scenarios when affected by a love potion. He might make grand gestures towards someone he wouldn't normally be interested in. Another likely character is Natasha Romanoff. Her complex past and guarded nature could create a great contrast when the love potion breaks down her walls.
Iruka and Mizuki are also possible characters for role reversal in fanfiction. Iruka could be the one with some hidden, not - so - good motives, while Mizuki could be the kind - hearted teacher figure. This would turn the early Naruto story on its head, as Iruka was Naruto's first positive influence in the original series. The new dynamic between Naruto and these two reversed characters would open up a whole new set of story possibilities.
Ant - Man would be a likely candidate as his power already involves size - changing. In fanfiction, his ability could be enhanced or malfunction, leading to all kinds of interesting scenarios. For example, he could accidentally make all the other Avengers the same size as him, creating a whole new dynamic for the team.
Thor would be one of the active ones. He has a lot to share from his Asgardian experiences. Hulk, well, he might not type much but when he does, it would be in short, powerful statements. And Scarlet Witch could be in there too. She could use her powers to sense if there's any danger approaching the chatroom or the Avengers themselves while chatting with the others.
Iron Man would be a likely candidate. He's already shown a sort of father - figure - like relationship with Peter in the movies. He can offer Peter high - tech resources, valuable advice on being a superhero, and also teach him about responsibility in a more modern way.