Ciri and Daenerys Targaryen. Ciri has magical powers and is a strong female character. Daenerys has her dragons and is a powerful leader. They could meet and form an alliance. Ciri might be interested in Daenerys' dragons and Daenerys could be intrigued by Ciri's magic. Together they could change the power dynamics in a fanfiction world.
Aquaman himself is often a popular choice. His unique abilities and his role as a king make him an interesting character to insert into the Game of Thrones universe. He could potentially interact with various characters in Westeros.
Definitely Ragnar and Tyrion. Ragnar is a fierce and intelligent Viking leader, and Tyrion is a clever and witty character in Game of Thrones. Their interactions would be full of banter and strategic planning. They could both learn a lot from each other's ways of dealing with power and politics.
Daenerys could be in it. She has a strong personality and is used to being in control. If someone challenges her or her claim to the Iron Throne in the fanfiction, it could lead to a catfight. Also, Margaery. She's clever and manipulative, and a catfight with her could be very interesting as she tries to outwit her opponents using her charm and wits.
Daenerys Targaryen is often a popular choice. Her strong - willed and powerful nature makes her an interesting character to insert into the Harry Potter universe. She could potentially be a powerful witch or have some sort of unique connection to magic. Another popular one is Tyrion Lannister. His intelligence and wit would make him a great addition to Hogwarts. He could be a student who uses his cunning to solve magical mysteries.
Hermione and Sandy could be great for a crossover. Hermione's intelligence and love for knowledge could be paired with Sandy's scientific know - how. They could collaborate on some sort of underwater - land hybrid project, perhaps creating a new kind of magical - scientific device that works both in Hogwarts and in Bikini Bottom.
Theon Greyjoy is also a candidate. His identity and self - worth are often tied to his appearance. A headshave in fanfiction could be a way to explore his further degradation or, conversely, his redemption as he sheds his old self - image and tries to start anew.
Daenerys could be a likely character. She has a strong will, and seeing her being hypnotized or using hypnosis on others would be an interesting twist. It could play into her power dynamics, like hypnotizing her dragons to perform different tasks.
Some fans also like the idea of Tyrion Lannister and Dandelion from The Witcher being paired up in fanfiction. Tyrion's wit and Dandelion's charm could create some really humorous and interesting interactions. They could get into all sorts of mischief together in a crossover story.
Jon Snow is often still a very popular character. His story of being a bastard and his true heritage make him an interesting figure. In fanfiction, he might get to explore his role as a potential king or leader in different ways than in the original series.
Loki and Draco Malfoy would be a likely crossover. Loki is the mischievous god in the MCU, and Draco is a bit of a troublemaker in the Harry Potter world. They could team up and cause all sorts of chaos. Maybe Loki would teach Draco some of his more devious tricks, and Draco could introduce Loki to the pure - blood ideology of the wizarding world, which could lead to some really interesting storylines.