Well, it could start with Ruby chasing after a Grimm that has some sort of strange portal - like ability. She gets sucked through and ends up in Equestria. In Equestria, she meets Twilight Sparkle first. Twilight is intrigued by Ruby's different technology and fighting style. Ruby, on the other hand, is amazed by the magic spells Twilight can do. They soon realize that there are some dark forces at work in both their worlds that seem to be connected. So, they decide to combine their skills and knowledge, along with their friends, to defeat this greater evil that spans across dimensions.
Perhaps Ruby Rose arrives in Equestria during a time of chaos. She is mistaken for an enemy at first. But as she shows her kind heart and her willingness to help, the ponies start to trust her. She could learn about the magic in Equestria and how it differs from her own world's semblances. In the story, she could also share her knowledge of combat and strategy with the ponies, and together they work towards restoring peace in Equestria while also finding a way for Ruby to get back home.
One possible plot could be that Ruby Rose somehow gets transported to Equestria. She might initially be confused by the magical and colorful world. The ponies could be both curious and a bit scared of her scythe and combat skills. Ruby could then team up with the Mane 6 to face a common threat that requires both her combat abilities and the ponies' magic. For example, a new kind of dark magic that is corrupting the land and only Ruby's speed and fighting skills along with the ponies' unique magics can stop it.
In this crossover, Ruby Rose would probably be a bit out of place at first. But her character could develop as she interacts with the ponies. Her sense of justice would fit well in Equestria, especially when facing threats to the land or its inhabitants. She might start to use her skills in a more diplomatic way, learning from the ponies how to resolve conflicts without always resorting to combat. Also, she could befriend some of the ponies who are interested in her unique abilities and weapons, and in turn, she could learn about their magic and how it can be used for good.
One possible plot could be that Ruby discovers a lemon - scented oil that has a strange effect on Crescent Rose. When she applies it to her weapon, Crescent Rose starts to emit a lemon - colored glow. This new feature attracts a special type of Grimm that is only drawn to this lemon - like energy. Ruby has to figure out how to use this new situation to defeat these Grimm and also understand the origin of the oil.
Survival is quite common. In many crossovers, Ruby is thrown into a dangerous situation in the new world. She has to use her wits and skills to survive. Whether it's a world full of demons or a high - tech dystopia, she has to find a way to stay alive. And the theme of discovery is also present. She discovers new places, cultures, and technologies in the crossover scenarios.
Maybe Reese is a new student at Beacon Academy, and Ruby is assigned to be her guide. Ruby shows Reese around the school, introduces her to their friends, and they start training together. Along the way, they discover that they have some shared interests in combat techniques and a love for adventure. As time passes, they become close friends and perhaps something more as they face various threats to the school and their world.
There's also a crossover that pairs Ruby Rose with characters from a well - known anime. In this fanfiction, Ruby's weapon skills and her determination really stand out as she teams up with the anime characters to face common enemies. It's exciting to see how the RWBY elements blend with the anime's unique style.
Her relationships with other characters are another great aspect. In crossovers, she can form unique bonds with characters from different franchises. Whether it's a friendship or a more complex relationship, seeing how Ruby interacts with new characters adds depth to the fanfiction. For instance, in a crossover with a fantasy world, her relationship with a wise old wizard could be both heartwarming and full of learning experiences.
It could be about Harry having unique abilities as Ruby's pet. Maybe he can sense Grimm before they appear, helping Ruby in her battles. He might also have a special bond with Ruby that allows them to communicate in a non - verbal way.
In such a fanfiction, one possible plot could be that Ruby sacrifices herself to save her friends from a powerful and evil enemy. Maybe she uses her Silver - eyed Warrior powers to their fullest extent, which drains her life force but stops the enemy from harming her team. Her sacrifice could then inspire her friends to carry on her legacy and fight even harder against the forces of evil.
She could die in a battle against a new and extremely powerful Grimm. Maybe a Grimm that has the ability to nullify her silver eyes power and overpowers her in combat.
It could be that Ruby has to deal with the consequences of a major decision she made in the past. This causes her to question her leadership skills and she embarks on a journey of self - discovery to become a better leader for her team.