Well, a cool concept for Pokemon and Dragonball Z fanfiction could be that the energy in the Dragonball Z world affects Pokemon in strange ways. For example, Pikachu could learn to use Ki blasts. Also, a story where the Z - fighters visit the Pokemon regions and have to participate in Pokemon battles to save the day. And a more complex idea would be a fusion of the two worlds' power systems. Say, a Pokemon trainer figures out how to use Ki to enhance their Pokemon's abilities, and in turn, the Pokemon help the trainer in combat against the powerful foes in the Dragonball Z world.
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.
One idea could be that the characters from RWBY gain the ability to use Ki like in Dragonball Z. For example, Ruby could use her speed along with Ki blasts in a new and powerful way. Another plot could involve the villains from both universes teaming up, forcing the heroes to combine their skills and powers. Or perhaps there could be a tournament in the style of the World Martial Arts Tournament where characters from both RWBY and Dragonball Z participate.
One idea could be that a new powerful character arrives in both the Naruto and Dragonball Z universes. This character has a unique charm that attracts the female characters from both worlds. For example, in Naruto, Sakura, Hinata and Ino might be intrigued by this new person's skills and different personality. In Dragonball Z, Bulma, Chi - Chi and Android 18 could also be drawn to them. Another plot could involve a time - travel scenario where a character from one universe travels to the other and creates a harem there, bringing together different fighting styles and relationships.
Well, perhaps the Dragon Balls are accidentally sent to the Naruto universe. Naruto and his friends then have to figure out what these strange orbs are. Meanwhile, Goku and his pals come looking for the Dragon Balls and end up meeting Naruto. They could exchange their different fighting styles and techniques, like Naruto teaching Goku about chakra control and Goku showing Naruto how to sense ki.
One interesting Dragonball Z fanfiction could be about an alternate universe where Goku never hit his head as a baby. In this story, he might grow up as a full - blooded Saiyan with a more aggressive nature. Another could focus on Vegeta's life on Planet Vegeta before it was destroyed, exploring his family and early training. And there are also fanfictions that bring in new characters, like a half - Saiyan half - Namekian who has unique powers and plays a crucial role in a new threat to the universe.
One idea could be a crossover where Naruto and Goku team up to fight a common enemy. Maybe an evil force that combines the power - stealing abilities of Orochimaru and the planet - destroying might of Frieza. They would have to learn from each other's fighting styles and powers.
Rather than focusing on adult fanfiction (which may not be appropriate), there are great Dragonball Z fanfictions that explore character backstories more deeply. For instance, a story could be about Goku's early days on Earth as a baby, how he was found by Grandpa Gohan, and how his Saiyan nature might have unconsciously influenced his behavior even as a toddler. This kind of fanfiction enriches the understanding of the original characters without involving adult themes.
There might be a fanfiction that focuses on Vegeta and Bulma's relationship in a more in - depth way. It could show how they handle their differences while also dealing with the Saiyan - Earthling cultural clashes. This type of story can add a lot of depth to their relationship and show sides of the characters that we don't see as much in the official story.
Bulma from Dragon Ball Z in Naruto fanfiction has potential. She is smart and resourceful. In the Naruto world, she could use her intelligence to create new technologies or help with strategic planning during battles, and her interactions with the ninja characters would add a new dimension to the story.
One idea could be that Goku and his friends are on a quest to find the rarest Pokemon in the Dragon Ball Z world. Maybe the Dragon Balls have the power to summon legendary Pokemon. For example, the Saiyans could use their fighting skills to train Pokemon for battle. Another idea is that the villains from Dragon Ball Z, like Frieza, try to capture powerful Pokemon to use in their evil plans.