Obviously Naruto is one of the main characters since it's about him watching the future. Sasuke would also likely be a key character, given their long - standing relationship. And Kakashi, as Naruto's former teacher, could play an important role too.
In addition to RWBY, other important characters like Qrow or Ozpin could also be focused on. Qrow has a lot of history and his own future could be intertwined with RWBY's. Ozpin, with his vast knowledge and secrets, might also play a crucial role in how they view the future. His wisdom could be used to help them understand what they see, or he might also be a part of the future they witness in unexpected ways.
Obviously, characters from Konoha will be central. Naruto might be one of the main characters as he often represents the heart of Konoha. His ability to change things could be key in how Konoha responds to the future it sees.
Since it's strq related, the main characters are probably the members of strq.
Obviously, Team Minato itself is the main focus. This includes Minato Namikaze, who is the leader of the team. He is a very powerful ninja with his Flying Thunder God Technique. Then there's Kakashi Hatake, a young and talented ninja who is known for his Sharingan. Obito Uchiha is also a key character, with his Uchiha blood and his dreams of becoming Hokage. And finally, Rin Nohara, who plays an important role in the team's dynamics.
Obviously, Bardock is one of the main characters since it's about him watching the future. There could also be other Saiyans like Gine, his mate. And depending on how the story goes, perhaps some of the more well - known Saiyans from later in the Dragon Ball timeline could make an appearance, like Vegeta or Goku, even if just in Bardock's visions of the future.
Since I haven't read it, I can't say for sure. But likely, the members of Class 78 are the main characters. They could be students with different personalities, skills, and backstories that play important roles in how they interact with the vision of the future.
Goku and Vegeta are likely to be main characters. They are the two most powerful Saiyans and often at the forefront of any major threat in the Dragon Ball Z universe. Also, Piccolo, as one of the smartest and powerful characters, would probably play an important role.
I don't know for sure without reading it. But if it's about the 78th class, it might include the typical characters associated with that class in the original work. Maybe the leaders or the more prominent students within that class could be the main characters.
There could be an inventor as a main character, who created the 78b watches and is trying to protect them from being misused in the future.
Sakura might also be a main character. In the original series, she is part of Naruto and Sasuke's group. Her skills as a medical ninja could be crucial in a story that involves future memories. Maybe Naruto's future memories show a situation where Sakura's medical skills are the key to saving someone important. Additionally, Kakashi could be in it too. His experience and wisdom could help Naruto make sense of his future memories and figure out what actions to take.