Well, Harry Potter for sure. He's the hero of the story, so when you're doing a crossover with a god, he's an obvious pick. People like to write about how he might use god - given powers to fight against Voldemort in new and exciting ways. Ron is also a character that shows up in these crossovers sometimes. He could be given some sort of special ability by a god, which might help him be more confident and useful in the group. And then there's Voldemort. Imagine him trying to either steal the power of a god or being in conflict with a god - like entity. It would make for a really intense story.
Harry Potter himself is very commonly paired with god - like entities. Since he is the main character, it makes sense that fanfiction writers would explore how his story changes when he has the influence or power of a god on his side. Hermione is also a popular choice. Her intelligence combined with god - like assistance could lead to all sorts of new magical discoveries. Another common character is Dumbledore. His already powerful and mysterious nature can be enhanced even more when paired with a god - like being, and it can add more depth to his backstory and actions.
Harry Potter and Nate Ford could be a likely pair. Harry's experience with facing great evils and his leadership skills combined with Nate's strategic mind in planning heists would make for an interesting dynamic. They could learn from each other's methods of problem - solving.
Madara is quite commonly paired with Hashirama in crossover fanfiction. Their complex relationship in the original Naruto series makes for interesting scenarios when they are placed in different crossover settings. They could be forced to work together against a new threat or their rivalry could take on new dimensions in a different world.
Gwen Tennyson is often paired with Ben 10000. Since they are related in the original series, it's interesting to see how their relationship might be different in a crossover scenario. Maybe they have to work together to save the universe in a more complex way than before.
Nightwing is often paired with Batgirl. They have a history together, and in crossover fanfiction, they can have some great team - up moments. Whether it's fighting crime in Blüdhaven or Gotham, their combined skills are quite formidable. Also, Harley Quinn is a popular character to pair with Batgirl. Their interactions can range from comical to intense, as they have very different personalities but can find common ground in certain situations.
Goku is often paired with Bardock in crossover fanfiction. Since they are father - son, it's natural to explore their relationship in different crossovers. They might team up against a powerful enemy from another universe or have heart - to - heart conversations about their Saiyan heritage.
Harry Potter and Ichigo Kurosaki are very likely to be paired. They are both the main protagonists in their respective series. Harry has his strong sense of justice and magical powers, and Ichigo has his determination and Soul Reaper abilities. They could form a great partnership to fight against common enemies.
Harry Potter himself is often paired with Madam Hooch in fanfiction. Given their connection through Quidditch and flying lessons, it's easy to see why writers would explore their relationship further. Maybe Harry has some trouble with a new flying technique and Madam Hooch spends extra time with him, leading to a deeper bond.
Ron and Uryu might be paired. Ron has his own insecurities but also his moments of great courage, much like Uryu. They could bond over their skills in combat, Ron with his magic and Uryu with his Quincy powers.
Hermione is usually one of the main characters that interact with Harry. She might be in awe of his new powers at first but then help him use them wisely. Ron could also be there, perhaps being a bit more skeptical at the start but eventually coming around. Dumbledore might also play a role, guiding Harry even in his god - like state, sharing some of his own deep knowledge of magic.
Luna Lovegood is also a common choice. Her eccentric nature and unique perspective on the wizarding world can attract Harry. In fanfiction, they might bond over their experiences with the strange and magical, like Luna's adventures with the Crumple - Horned Snorkacks and Harry's battles against Voldemort.