Bulma from Dragon Ball Z and Lissa from Fire Emblem could be an interesting pair. Bulma's intelligence and technological know - how could be used to help Lissa with her healing magic. Lissa could introduce Bulma to the more magical and strategic aspects of the Fire Emblem world. They could work together to create new items or strategies that combine the technology of Dragon Ball Z and the magic of Fire Emblem.
Vegeta could be paired with Ike. Both are strong - willed and prideful characters. They would initially clash due to their similar personalities, but as they face a powerful enemy together, they would come to respect each other. Vegeta's Saiyan power and Ike's swordsmanship would make for an interesting combination in battles. They could also have some great banter as they compare their respective power levels and combat philosophies.
One idea could be to combine the power - up mechanics of Dragon Ball Z with the strategic battles of Fire Emblem. For example, characters in the fanfic could gain new abilities similar to Super Saiyan transformations during intense battles in the Fire Emblem - like battlefields. They could use these new powers to turn the tide of the fight against the enemy forces, which could be a mix of both Dragon Ball Z villains and Fire Emblem antagonists.
Goku and Captain America would be really interesting. Goku is all about raw power and a simple - minded love for fighting strong opponents, while Captain America represents honor, strategy, and leadership. Their interaction could be fun, like Goku trying to understand Cap's sense of duty and Cap being in awe of Goku's power.
Another great pairing would be Weiss and Vegeta. Weiss is from a noble family and has a refined way of fighting, while Vegeta is a proud Saiyan prince. Their interactions would be filled with tension and mutual respect. Vegeta could teach Weiss about the power of Saiyan pride and she could introduce him to the more elegant fighting techniques of Remnant.
One popular pairing is Naruto and Goku. People like to imagine them as friends or even training partners. Another is Sasuke and Vegeta. They both have that cool, brooding personality.
One interesting pairing could be Goku and Natsu. Goku is all about power and the pursuit of strength, while Natsu has a similar drive. They could have some really intense training sessions together. Another cool pairing would be Vegeta and Gray. Vegeta's serious and often - cold demeanor could contrast with Gray's more laid - back but still determined attitude. And then there's Bulma and Lucy. Bulma's intelligence and technological know - how could pair well with Lucy's celestial spirit magic knowledge. They could work together to create some new gadgets or strategies.
I think Gohan and Martian Manhunter would make for an interesting duo. Gohan is a brilliant and powerful character who has a lot of potential. Martian Manhunter, with his telepathic abilities and shape - shifting, could teach Gohan new ways to use his powers. And Gohan could show Martian Manhunter the value of pure physical strength. Also, Trunks and Flash would be a cool pair. Trunks' time - traveling and sword - fighting skills combined with Flash's super - speed would create some really exciting action scenes. They could race each other or team up to outrun a powerful enemy.
Zoro and Vegeta would also be a cool pairing. Zoro is all about becoming the greatest swordsman and has a strong sense of pride. Vegeta is a proud Saiyan prince. They could start off as rivals, constantly trying to outdo each other in combat. But as they face tougher enemies together, they would start to respect each other's skills. Vegeta could teach Zoro some energy - based attacks to add to his swordsmanship, and Zoro could show Vegeta the value of discipline in a different way.
It's hard to say for sure, but Goku would be a very strong contender. His ability to keep increasing his power level through training and reaching new forms like Super Saiyan God and Ultra Instinct makes him extremely powerful. However, characters like Franklin Richards in the Marvel universe have reality - warping powers that could also be very hard to defeat. But if Goku were to fully master Ultra Instinct and combine it with the power of the Dragon Balls, he could potentially be the most powerful.
Ruby and Marth could be an interesting pairing. Ruby is young and full of energy with her scythe skills, while Marth is a noble and skilled leader. Their different leadership styles could create an interesting dynamic. Ruby could learn about more strategic leadership from Marth, and Marth could be inspired by Ruby's bold and fearless approach to combat.
The plot might involve a villain who has the ability to steal both ki and chakra. This forces Goku and Naruto to team up. Goku, with his Super Saiyan forms, provides brute strength, while Naruto, with his various jutsu like Rasengan and his Sage Mode, offers strategic combat skills. They would have to combine their powers in unique ways to defeat this new threat.