Some fanfictions also pair Lucy with Caspian. Lucy has her own unique magic and kindness, and when paired with Caspian, it can create interesting relationships, like her helping Caspian understand the more magical aspects of Narnia.
Another popular pairing is Edmund and Caspian. Edmund has his own complex character arc, and when put together with Caspian, they can have great adventures. They might start as rivals but end up as great friends, with Edmund using his wits and Caspian his courage to overcome difficulties.
One idea could be a story where Peter and Caspian have to go on a secret mission together to find a lost magical artifact that can save Narnia from a new threat. They start off not getting along but gradually learn to respect each other's skills.
Percy Jackson and Peter Parker themselves are often the most popular pair. Their different personalities and powers make for an exciting combination. Percy's laid - back yet brave nature combined with Peter's witty and responsible self can create great storylines.
The White Witch could make a great antagonist even in a Prince Caspian and Peter fanfiction. Her evil magic and desire for power are well - known. She could return in some form, perhaps a remnant of her magic that was left behind and has now taken on a new, more insidious form. Another option could be a power - hungry Narnian noble who wants to overthrow Prince Caspian and sees Peter as a threat to his plans. He could be sly and manipulative, causing trouble for both of them.
Harry Potter and Ryoma Echizen are often paired. Harry's heroic nature and Ryoma's tennis talent make for an interesting combination. They can learn from each other, with Harry learning about discipline in tennis from Ryoma, and Ryoma getting a taste of the magical world from Harry.
Oliver Queen (Green Arrow) and Black Widow are often paired. Oliver's combat skills with his bow and arrow combined with Black Widow's martial arts and espionage skills make for an exciting duo. They could be on a mission where they need to infiltrate an enemy base and use their complementary skills to succeed.
Often, Naruto and Agent 47 are paired as they are the main characters from their respective universes. Their interactions can be really interesting as they come from such different worlds. Naruto's exuberance and Agent 47's cold, calculated nature create a great contrast.
Often, Naruto himself is a popular character to pair with characters from Ravel's world. His strong will and determination make him an interesting addition to any crossover story. Another popular pairing could be Sasuke from Naruto with a powerful character from Ravel. Their brooding natures and strong powers can create an interesting dynamic.
In crossovers with other shonen series, characters like Luffy from One Piece can be paired with Ichigo. Their different personalities and power sets would create interesting dynamics. Luffy's carefree nature contrasted with Ichigo's more brooding side could lead to some humorous and action - packed adventures.
Rukia is a very popular character to pair with Renji in crossover fanfiction. Their long - standing relationship in the original series makes it interesting to see how they interact in different crossover scenarios. Ichigo is also popular. Given their rival - like relationship in the main story, in a crossover, they could end up as allies against a new common enemy.
Homer and Jiraiya might be a fun pair. Homer loves food and Jiraiya loves women and writing. They could go on adventures together, with Homer being amazed by Jiraiya's ninja powers and Jiraiya being entertained by Homer's simple - mindedness. And they could get into all sorts of trouble, like accidentally stumbling upon a secret enemy base while looking for a good place to eat or write.