It could also involve Naruto's future family in some time - travel or alternate reality scenarios. For example, if Naruto from the future travels back in time and his future family members come with him. They might have been corrupted in the future and their actions in the past, like betraying Naruto, could be part of a chain of events that led to that corruption. This would create a complex web of relationships and a unique take on the 'betrayed by family' concept.
Obviously, Naruto would be one of the main characters. He's the one being betrayed. From RWBY, Ruby, Weiss, Blake, and Yang are likely to be involved. They are the central characters in RWBY, and if there's a betrayal of an outsider like Naruto, they would probably play a significant role in it.
There could be a mentor - like figure for Harry who tries to help him through this betrayal. This character might be an old wizard or witch who sees the truth and tries to make Harry understand that his family's actions are wrong. This character adds another dimension to the story as they are in contrast to Harry's betraying family.
Well, obviously Naruto himself is the central character. Sasuke could be involved as he has a complex relationship with Naruto. In a crossover, if Naruto is betrayed and ends up in the Dragon Ball universe, Vegeta might be a character he interacts with. Vegeta could initially see Naruto as a weakling but later come to respect his skills. Another character could be Luffy from One Piece. If Naruto is betrayed and crosses over to the One Piece world, Luffy would likely befriend him and help him out, seeing Naruto's situation as similar to his own crewmates' struggles.
Obviously Naruto is the main character. And sometimes his parents might be involved in a more complex way, like through flashbacks or alternate storylines where they had reasons for the so - called 'abandonment'.
Well, Sasuke could be one of the main characters involved. Since he has a complex relationship with Naruto, he might play a role in the betrayal, either as a part of the group that betrays Naruto or as someone who is conflicted about the situation. Sakura could also be involved. She has her own opinions and relationships within the Naruto universe, and she may be part of the group that turns against Naruto for some reason.
Obviously Naruto himself would be a central figure. He could be the enthusiastic player who always tries to bluff his way through the game. Sasuke might also be there, being the more reserved and calculating player. Sakura could be the one who scolds them both for their reckless betting. Kakashi could be the experienced player who gives out tips and tricks now and then.
The main characters are Ash and May, of course. Ash is a well - known Pokemon trainer with a passion for catching and training different Pokemon. May is also a trainer who has her own goals and journey in the Pokemon world. In this fanfiction, their relationship takes a turn due to the betrayal aspect.
Sakura could be involved. She could be like a healer or an advisor in the new world. Her medical skills would be very useful. Also, Sasuke might be there. He could be a sort of enforcer, using his Sharingan to detect threats. In the world of Asgore, they could form a new kind of team, with Naruto as the leader like Asgore. And then there could be characters from Asgore's world like Toriel. She could be a guide to Naruto about the culture and history of the place.
Hinata would also be very involved. She has deep feelings for Naruto. She might be at his bedside in the hospital, praying for his recovery. After his death, she would be heartbroken and might have to find a new purpose in life without Naruto.
It could be the head of the criminal family, a powerful and cunning figure. Maybe someone who has a deep - seated grudge against the Hidden Villages and is leading his family in a vendetta.