Ruby could have an interesting interaction with Vegeta. Vegeta is known for his pride and his drive to be the strongest. Ruby, with her own set of skills, might either be a target of his envy or someone he could respect. For example, if Ruby has a unique power that Vegeta can't easily understand, it could pique his interest or make him feel threatened.
Another possible interaction could be between Ruby and Piccolo. Piccolo is a stoic and powerful character. Ruby's presence could disrupt his usual calm demeanor. Maybe Ruby's cheerfulness or her different way of thinking could annoy Piccolo at first, but over time, they could develop a mutual respect. For example, if they were in a battle together, Ruby's quick thinking and Piccolo's strategic mind could make them a formidable team.
Well, one way the storyline could blend is by having Ruby's unique abilities from her own world interact with the power levels in Dragonball Z. For example, if Ruby has some sort of magic, it could be an interesting contrast to the ki - based powers in Dragonball Z. Maybe she could team up with Goku and his friends to fight a common enemy. Her different fighting style would also add a new dimension to the battles.
Well, one possible plot could be that Naruto and Goku somehow end up in each other's universes. Naruto could be intrigued by the concept of ki and try to learn it, while Goku might be interested in Naruto's ninja skills like shadow clones. They could team up to fight a common enemy, perhaps a new villain created by fusing some of the bad guys from both universes, like a combination of Orochimaru and Frieza.
One interesting plot could be that the Pokemons are suddenly exposed to the energy of the Dragon Balls. Some Pokemons start to gain Saiyan - like abilities. For example, Pikachu could become Super Saiyan Pikachu, with its electric powers amplified to an extreme level. It could then face off against powerful Pokemon villains in a whole new way, with the fast - paced combat style of Dragonball Z.
A Sailor Moon and Dragonball Z crossover fanfiction might start with a strange rift in the universes. Sailor Mercury detects an unusual energy signature that seems to be a mix of magic and ki. As they investigate, they run into Goku who is also curious. The two groups then find out that there's a powerful being trying to merge their worlds for its own evil purposes. The Sailor Guardians and the Z - fighters would then have to put aside their differences in fighting techniques and beliefs to stop this threat. They might have some funny moments like Vegeta getting annoyed with Sailor Mars' sassy attitude or Sailor Venus being in awe of Goku's strength.
One possible plot could be that the Sailor Scouts are facing a new and extremely powerful enemy that they can't defeat on their own. Goku and his friends from Dragonball Z sense the danger across the dimensions and come to help. The Scouts are initially shocked by the Saiyans' power levels but then start to learn from them about ki control. Together, they combine their powers, like the Sailor Scouts using their magic with the Z - fighters' ki blasts to take on the foe.
In a crossover, it really depends on how the powers are combined. If Naruto could somehow combine the Nine - Tails' chakra with Sage Mode and then learn some ki techniques from the Dragonball Z side, he could be extremely powerful. But Goku has been training for a long time and has access to godly ki. So he would be a top contender as well. Vegeta too, with his own determination and power - ups, could also be in the running for the strongest.
It's hard to say. Goku in his Super Saiyan forms has incredible power and can destroy planets. But Naruto has the Nine - Tails' power and Sage Mode. If we consider Naruto at his peak with all the tailed beasts' power combined, he could give Goku a tough fight. However, Goku's ability to constantly increase his power level might give him an edge in the long run.
Another candidate could be Dialga from Pokemon. Dialga has the power to control time. In a crossover, if it could use its time - control abilities effectively against the Dragonball Z characters, it could be very powerful. For example, it could freeze time and then attack its opponents without them being able to react. But again, Goku has shown the ability to break through all kinds of limitations, so he might still find a way to defeat Dialga in the end.
Imagine Goku meeting Lucy. Lucy, being a celestial spirit mage, would be fascinated by Goku's power. Goku, on the other hand, might not understand the concept of celestial spirits at first. But as they interact more, Goku could help Lucy become stronger physically, while Lucy could introduce Goku to the magical side of the Fairy Tail world. Goku could also have interactions with Gray. Gray's ice - make magic would be a contrast to Goku's heat - based ki attacks. They could have friendly battles to test each other's strength.
Well, it could be really exciting. Picture Naruto with Goku's ability to go Super Saiyan. Maybe Naruto could learn the Kaio - ken technique. The story could involve the two universes colliding, with villains from both sides teaming up. So Naruto and his friends from Konoha would have to join forces with Goku and the Z - fighters to save both their worlds.