Blake might be another character. Given her cat - like reflexes and her experience with dual - wielding weapons, she could potentially master Santoryu. She has the dexterity and combat awareness that would be beneficial in learning and using the three - sword fighting style in the context of 'santoryu rwby fanfiction'.
Ruby is a likely candidate. She's already a skilled fighter with her scythe, and her eagerness to learn new techniques would make her adapt well to Santoryu. Her speed and agility could be enhanced with the three - sword style.
Jaune could also be a good choice. He's constantly striving to improve his fighting skills. Learning Santoryu could give him an edge in battles. He has the determination to practice hard and master the complex three - sword techniques, and it could be a great character development arc for him.
One interesting aspect could be the unique combination of the Santoryu style from One Piece with the RWBY universe. It might lead to really cool fight scenes where characters use Santoryu techniques in the RWBY world. For example, seeing Ruby use a Santoryu - inspired sword style would be amazing.
Ruby is an obvious choice as she has that lead - character feel. Her naivete and determination are traits that can be paralleled to Dorothy. She would be the one to lead the group through the strange world of Oz.
Ruby is a likely winner. She has her powerful scythe, great speed, and strong leadership skills. Her ability to quickly analyze a situation in battle gives her an edge. Weiss also has a good chance. With her Glyphs and powerful summoning abilities, she can control the battlefield. Blake is another one. Her speed and shadow - cloning ability make her a tough opponent. And Yang with her super strength and ability to take a hit and then counterattack fiercely could also be a top contender.
Naruto and Ruby are very likely to interact. Ruby is the main character in RWBY, and Naruto being the central figure in his own story, their paths would surely cross. Ruby's enthusiasm for combat and her leadership qualities could make for an interesting dynamic with Naruto's determination and his own brand of leadership. Also, Weiss could interact with Naruto. Given Weiss's strict upbringing and her proficiency in combat, her reaction to Naruto's unorthodox ninja techniques would be fascinating.
I think Weiss could also be central. She comes from a powerful family and has a lot of influence. In a story about watching the future, her knowledge of politics and her strategic thinking could play a big role. Also, her relationship with the other characters, especially Ruby, would be important in how they all react to what they see in the future. Blake might also be central as she has her own complex backstory and her views on the relationship between humans and Faunus could be greatly affected by seeing the future.
Yang Xiao Long could be a key character. Her brash and powerful fighting style might be pitted against the kind of foes from the Man of Steel universe. And Weiss Schnee, with her family's influence and her own ice - based powers, could also be in the spotlight. She might have to use her skills in a different context, perhaps in a more technology - heavy and super - powered environment like in Man of Steel.
Ruby would be a likely candidate. She is the leader of the RWBY team in their own universe, and she has a natural ability to inspire others. Her quick thinking and combat skills would also be valuable in the Battlefield 1 setting. She could quickly assess the situation on the battlefield and make decisions on where to move the team and what objectives to pursue.
Yang could be a likely candidate. She's strong - willed and passionate. If she fell into a yandere state, she'd be very protective and possessive. Blake is also a possibility. Given her past and her somewhat reserved nature, if she developed yandere tendencies, she might be more subtle about it but equally as intense.
Definitely Ruby Rose and Master Chief. Ruby is the main character in RWBY, full of energy and determination. Master Chief is a well - known and iconic figure in Halo. Their different personalities and combat styles would create an interesting dynamic. Ruby's quick - thinking and agility could pair well with Master Chief's stoic and strategic approach in battles.
Ruby and Goku could be a likely pair. Ruby is young and full of potential, much like Goku was when he started his journey. Goku could be a mentor - like figure to Ruby, teaching her about Ki and new combat techniques. Another pair could be Weiss and Vegeta. Weiss is from a noble family and has a sense of pride, similar to Vegeta. They could have an interesting dynamic where they initially clash due to their strong personalities but then grow to respect each other. Yang and Trunks could also be paired. Yang is a strong and fearless fighter, and Trunks has his own badassery. They could team up in battles and share their experiences of growing up in tough situations.