One more theme is the exploration of different moralities. The relatively simple good - vs - evil in Hyrule is contrasted with the more complex moral landscape of the DC Universe. This can lead to some interesting internal struggles for the characters as they navigate these different moral frameworks and try to figure out who the real enemies are and who can be trusted.
Power struggles are often seen in these crossovers. The heroes from Zelda might find themselves in a world where there are different power hierarchies. They have to navigate through political intrigue or battles for supremacy, which adds depth to the story. Also, friendship and teamwork are themes that are explored. When characters from different universes come together, they learn to trust and rely on each other, and their relationships evolve as they face common enemies.
One common theme is the rebuilding of Hyrule. Since Link and Zelda are often seen as the saviors of the kingdom, in married fanfictions, they take on the task of making Hyrule a better place together. Another theme is the exploration of their new - found relationship dynamics, like how they communicate and make decisions as a married couple.
One common theme is the clash of different powers. Naruto's chakra - based abilities and the magic of Zelda are often pitted against each other or combined in unique ways.
A common theme is the combination of magic. Since both universes have their own forms of magic, fanfictions often explore how the magic from Zelda and Fairy Tail can interact or be combined. For example, the Triforce's power might be used in a Fairy Tail - style magic battle.
Maybe Zelda herself could be transported to the Avengers universe. With her wisdom and magic, she could assist the Avengers in different ways. She could use her magic to heal the wounded Avengers or help Tony Stark understand some ancient technology that has similarities to her own world's tech. She could also provide strategic advice based on her experience dealing with Ganon in her own realm.
One idea could be that Link, from Legend of Zelda, somehow gets transported to the Naruto universe. He might initially be mistaken for a strange shinobi with his unique green tunic and hat. Link could use his combat skills, like swordsmanship and shield defense, to team up with Naruto and his friends against common enemies, such as the Akatsuki who are after powerful artifacts. Maybe the Ocarina of Time has some sort of power that the Akatsuki wants, and Link has to protect it while in this new world.
Power struggles are a common theme. Bane is a very powerful character, and when he crosses over with others, there's often a battle for dominance or control.
Power dynamics is another theme. The Amazons are known for their strength and unique abilities. In crossover fanfiction, we often see how their power compares to the likes of Superman or Green Lantern in DC. For example, some stories might have an Amazonian in a power - struggle with Lex Luthor, which shows the different types of power - physical, technological, and political.
A common theme is the clash of different power systems. Thor's godly powers from Asgard are very different from the powers of DC heroes. Fanfics often explore how these powers interact, like Thor's lightning against Superman's heat vision.
One common theme is adventure. Both Zelda and RWBY have elements of adventure, so it's natural that fanfics would combine them in that way. Another could be friendship, as both series have strong bonds between characters.