Another theme is power. Ruby already has her own unique powers, and when combined with the possible influence of the Branwen's abilities, it can lead to stories about her becoming even more powerful. This can also explore how she manages that power and the responsibility that comes with it.
Identity is also a significant theme. Ruby might question who she is in relation to the Branwen family. Is she still just Ruby Rose, or does her association with them change her identity? Fanfictions often delve into this self - discovery aspect.
A fanfiction I like is 'Ruby and the Branwen Legacy'. In this story, Ruby discovers secrets about the Branwen clan that are intertwined with her own destiny. The author does a wonderful job of creating suspense and building a new aspect of the RWBY lore.
One common theme is identity. Since the Branwen family has a complex history in RWBY, OC Branwen fanfictions often explore how the character grapples with their identity as a part of that family. Another theme is redemption. Many stories show the OC Branwen trying to overcome a troubled past or the negative reputation of the Branwen name.
The theme of identity is quite popular too. Raven has a split identity in a way, being both a bandit leader and having ties to the Huntsmen world. Fanfictions often play around with this, exploring how she reconciles these two parts of herself or how others view her because of her dual identity.
One common theme is leadership. Ruby is a team leader in RWBY, and many fanfictions explore how she grows into that role, like dealing with difficult decisions and inspiring her teammates. For example, in some fanfictions, she has to lead her team through a very dangerous mission where every decision matters.
Another theme could be acceptance. How her friends and the people around her accept and support her. It might show the growth of relationships within the RWBY universe as they learn more about Ruby's autism. There could also be themes related to Ruby's special interests within the RWBY world, like her weapon or her combat skills, and how her autism influences those interests.
The exploration of their backstories together is also a theme. Writers may create scenarios where Ruby and Cinder's pasts are somehow intertwined, perhaps revealing secrets that change their relationship in the RWBY universe.
One common theme is self - discovery. Ruby often has to figure out who she is in the context of her new family or situation. For example, in many of these fanfictions, she might realize new strengths or weaknesses she didn't know she had.
One common theme could be Ruby facing some sort of emotional coldness or isolation. Maybe she's been through a tough event and has withdrawn from her friends.
A prevalent theme is the exploration of their relationship. This can range from a deep platonic bond to something more romantic in some fanfictions. Also, the theme of loyalty is common. They are loyal to each other as members of their team, and fanfictions will often have situations where this loyalty is tested, like when one of them is in danger and the other has to make a choice to save them.
In Ruby mourning fanfictions, a significant theme is the struggle to move forward. Ruby is stuck in her grief, and the story is about her trying to break free from it. Another common theme is the change in relationships. Her relationships with other characters are often affected by her mourning, either they become closer as they try to support her or they drift apart because she pushes them away.