One plot idea could be Ruby getting caught in a scheme by the Malachite Twins and having to use her speed and combat skills to outwit them. Another could be the twins initially seeing Ruby as an easy target but then being impressed by her determination and gradually becoming her reluctant allies. Maybe there's a heist situation where Ruby has to work with the twins to retrieve something important from a powerful enemy.
Another idea is a fanfiction where the Malachite Twins form an unlikely alliance with the main RWBY characters. They could team up to face a common enemy that neither side could defeat alone. This would involve a lot of character development as they learn to trust and work with each other.
Ruby could form a bond with the Malachite Twins through a shared enemy. If there's a powerful foe threatening all of them, they would have to put aside their differences and work together. In the process, they'd start to understand each other better and form a bond.
One common theme is their relationship with other characters in the RWBY universe. For example, how they interact with the main characters like Ruby or Weiss. Another theme could be their backstory. Many fanfictions explore where they came from and what led them to be who they are in the show.
One plot idea could be that Ruby discovers a hidden connection between her Silver - eyed powers and Ozma's ancient magic. Maybe she has visions that lead her to an old relic related to Ozma. Another could be that they team up to fight a new, powerful Grimm threat that is immune to normal Huntsman attacks, but Ruby's unique abilities combined with Ozma's knowledge can defeat it.
One plot idea could be Ruby and Winter teaming up for a special mission. Maybe they have to infiltrate an enemy stronghold. Ruby's speed and Crescent Rose could be combined with Winter's ice powers and combat skills for some epic fight scenes.
One plot idea could be Qrow training Ruby in some special combat techniques that are unique to his own fighting style. This would allow Ruby to gain new skills and also strengthen their bond as family members.
One idea could be Ruby trying to understand Salem's motives beyond just destruction. Maybe she discovers that Salem has a tragic past that led her to this path and Ruby attempts to find a way to redeem her. Another plot could involve Salem targeting Ruby specifically because of her silver - eyed powers and Ruby having to outwit Salem in a series of battles.
A possible plot for a fanfiction about Whitley and Ruby in RWBY could be that they are both chosen for a special task by Ozpin (or his successor). They are the least likely pair to be chosen together, but as they work on the task, they find out that they complement each other well. Whitley's knowledge of Atlas society and technology, combined with Ruby's combat skills and leadership, make them a formidable team. Along the way, they might face challenges from within the group that doesn't believe in their partnership, but they prove everyone wrong by achieving their goals successfully.
Another plot could involve Ruby and Arslan getting into a friendly competition. They could be competing in a tournament within the RWBY universe. This would show their different fighting styles and how they learn from each other during the competition. They might start off as rivals but end up as good friends.
One idea could be Ruby adjusting to her new cyborg body and the enhanced abilities it gives her, like super - strength or advanced weaponry integration. Another could be her facing discrimination from some in the RWBY world who fear or mistrust cyborgs.