A possible plot for Gilgamesh x RWBY fanfiction could be that Gilgamesh is summoned to Remnant by a powerful Dust - based magic. He then decides to test the strength of the four maidens. He starts with a show of his own power, which both terrifies and amazes the people of Remnant. As he progresses in his tests, he realizes that the unity among the RWBY characters is something he has not encountered before, and this makes him question his own view of power and superiority.
One idea could be that Gilgamesh, with his vast power and arrogance, arrives in the RWBY world. He might initially see the Huntsmen and Huntresses as beneath him but then becomes intrigued by Ruby's unique silver - eyed power. Another could be a scenario where Gilgamesh allies with a villain in RWBY, like Cinder, and together they try to reshape Remnant according to their desires.
One idea could be to have Gilgamesh as a powerful ancient being who awakens in the RWBY world. He could initially be seen as a threat but then form an unlikely alliance with the main characters. For example, he might offer his knowledge of ancient magic to help them fight against a new, powerful Grimm.
One plot idea could be that Female Gilgamesh, with her haughty and powerful nature, is sent to the Naruto universe for some mysterious reason. She initially clashes with Naruto because of their different outlooks. Naruto, being all about friendship and believing in people, tries to befriend her. She, on the other hand, looks down on the shinobi world at first. But as time goes on, they face a common enemy that forces them to work together. And through their battles and shared experiences, they start to develop feelings for each other.
A plot could revolve around Enkidu's struggle with his own identity while being in the presence of Gilgamesh. Gilgamesh, being so self - assured, could either help or hinder Enkidu's journey of self - discovery. Maybe in the fanfiction, there's a magic or a curse that starts to change Enkidu, and Gilgamesh has to decide how far he's willing to go to save his friend. It could add a lot of emotional depth to their relationship.
Maybe Gilgamesh gets involved in the power struggles within the DxD universe. He might see the different factions as beneath him but still decides to meddle for his own amusement. He could try to reshape the power structure according to his own ideals, which would lead to many interesting confrontations.
A plot for Gilgamesh Danmachi fanfiction might be that Gilgamesh discovers a hidden part of the dungeon that has a connection to his past. Maybe it contains ancient artifacts or secrets related to his origin. As he delves deeper, he has to team up with some of the local adventurers from Danmachi. They are initially skeptical of him but soon realize his power and knowledge are invaluable. Together, they face various challenges and traps, and Gilgamesh also has to deal with his own internal struggles as memories from his past start to resurface.
Another plot could involve a RWBY character ending up in the Naruto universe. Say, Weiss gets sent to Konoha. She might initially struggle with the different culture and the use of chakra, but eventually she could use her Glyphs in unique ways by combining them with chakra. This could also lead to some interesting interactions between her and the ninja students there.
A cool plot could involve the characters from Frozen getting stuck in the RWBY world and having to learn how to fight Grimm. Anna might be really eager to learn combat skills, while Elsa is more focused on controlling her powers in this new and dangerous environment.
One idea could be that Percy and his friends encounter Gilgamesh during a quest in a strange new realm. Gilgamesh could be a powerful ally or a mysterious foe. Maybe they have to work together to defeat a common enemy that is threatening both the world of Percy Jackson and the ancient lands of Gilgamesh.
One plot idea could be Kid Gilgamesh crossing over into a modern - day world and having to adapt to modern technology while still maintaining his pride and power. Maybe he gets into battles with modern superheroes who underestimate him at first.
One plot idea could be Ruby trying to redeem Torchwick. Since he's a villain in the original series, Ruby could see some good in him and attempt to turn him to the side of good. This would involve a lot of character development for both of them as they interact and Ruby tries to break through Torchwick's tough exterior.