Link and Harry would likely form a strong bond. Harry could teach Link some basic spells, and Link could show Harry his sword - fighting skills. Hermione might initially be a bit skeptical of Link's more straightforward approach to problem - solving, but would come to respect his courage. Ron and Link could bond over their shared love of food and adventure.
Another concept could be that some of the magical creatures from Harry Potter end up in the Zelda world. Hippogriffs could be used as a form of transportation for Link and his allies. And the house - elves could have an interesting role, perhaps they help out in the various villages in the Zelda world, using their magic to clean up and cook, while also getting a taste of freedom in this new world.
Harry Potter and Link are quite popular. Harry's magical abilities combined with Link's combat skills make for an exciting pairing. People like to imagine how they would interact and what kind of adventures they would go on together.
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.
Well, in some fanfictions, the Triforce from Legend of Zelda could be linked to the magic in Harry Potter. Maybe the power of the Triforce is seen as an ancient and extremely powerful form of magic that some wizards in the Harry Potter universe are trying to understand or control. Also, the creatures from both universes could interact. For instance, a Hippogriff might befriend a Cucco. It makes for really exciting and unique storylines.
One interesting crossover could be the use of magic spells from Harry Potter in the world of Legend of Zelda. For example, a character might use the 'Accio' spell to retrieve a key item in a Zelda dungeon. Another could be the appearance of Zelda characters in Hogwarts. Link could be a mysterious new student who has unique skills with his sword that are both magical and physical, much like some of the wizard dueling skills in Harry Potter.
One great fem Harry Potter x Legend of Zelda fanfiction is 'The Magical Hyrule Adventure'. It combines the magic of the Harry Potter world with the fantasy setting of Zelda. The story follows a female Harry Potter who somehow gets transported to Hyrule and has to use her magical skills to survive and help the people there. It has really interesting character interactions and a great plot that keeps you hooked from start to finish.
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.
Some great Legend of Zelda crossover fanfiction concepts include a crossover with the Sonic the Hedgehog series. Link could be racing through the Green Hills Zone on Epona. A crossover with the Super Mario Bros. universe is also a fun idea. Link and Mario could join forces to rescue Princess Zelda and Princess Peach from the clutches of their respective villains. Additionally, a crossover with the Kingdom Hearts series would be epic. Link could interact with Sora and the other Keyblade wielders, exploring different Disney and Zelda worlds together.