Can you recommend some good 'One Piece Dragon Ball Z crossover fanfic'?

Sure. One great Dragon Ball Z and One Piece fanfiction is 'The Crossover Adventure'. It combines the unique powers and characters from both series in a really exciting way. Another one is 'Power Merged' which imagines how the Saiyans from Dragon Ball Z would interact with the Straw Hats in One Piece when they are forced to team up.

The new storylines that can be created. For example, a new villain could emerge that requires the combined efforts of both the One Piece and Dragon Ball Z crews to defeat. This could involve battles in different settings from both universes, like fighting on the Grand Line and also in the Hyperbolic Time Chamber. It gives a whole new perspective to the existing story arcs of both series.

One great 'naruto and dragon ball z crossover fanfic' is 'The Ninja - Saiyan Alliance'. It combines the unique powers of Naruto characters like Naruto's Rasengan and Sasuke's Chidori with the super Saiyan powers from Dragon Ball Z. The story often has epic battles where Naruto characters team up with Goku and his friends to fight against a common powerful enemy.

One possible plot could be that Goku and his friends somehow end up in the One Piece world. They meet Luffy and his crew. Goku might be interested in the Devil Fruits and their powers. Luffy, on the other hand, would be excited to see Goku's super strength and ki abilities. They could team up to fight a common enemy like a powerful pirate who has also acquired some sort of dragon ball - like artifacts. This would lead to an epic adventure with both the Saiyans' and the Straw Hats' unique fighting styles combined.

Well, I've read a fanfic that involves time - travel, where Naruto travels to the Dragon Ball Z universe and meets Bulma when she was younger. They end up going on adventures together, with Naruto teaching her some ninja skills and Bulma showing him the wonders of her advanced technology. It's a great read for fans of both series.

You can try fanfiction websites like FanFiction.net or Archive of Our Own. There are usually a lot of Dragon Ball Z and One Piece fanfics there. Just search for the relevant tags.

Well, perhaps the Saiyans in Dragon Ball Z detect the strong energy from the Devil Fruits in One Piece. Vegeta decides to visit the One Piece world to see if he can gain an edge over Goku. Meanwhile, the Straw Hats are dealing with a new threat that seems to be more powerful than any they've faced before. Vegeta initially clashes with the Straw Hats but then realizes they need to work together. They combine their skills, like Goku's Kamehameha and Luffy's Gear Fourth, to take on the big bad.

One possible plot could be that Luffy and his crew are sailing in the Grand Line when they encounter a strange energy. It turns out to be a Dragon Ball. They then have to deal with various villains from both universes trying to get the ball. Maybe Frieza hears about it and teams up with some of the pirates from One Piece. And Goku, sensing the power of the Dragon Ball, also arrives in the One Piece world to help Luffy protect it.

One popular theme is crossover, where characters from Dragon Ball Z and One Piece meet and interact. It's really exciting to see Goku and Luffy team up or fight against each other. Another theme is 'what if' scenarios, like what if a certain character had different powers or made different choices.

A great fanfiction in this crossover genre is 'When Sonic Meets Goku'. This story delves deep into how Sonic's speed could potentially match up against Goku's super saiyan powers. It explores their different fighting styles and how they might learn from each other. The author does a great job of blending the two universes' unique elements.