A 'Broly in One Piece fanfic' might involve Broly being a part of the New World chaos. He could be seen as a rival to the Yonko or an ally depending on how the story goes. His Saiyan abilities would be a strange and new concept in the One Piece world. For example, his ability to increase his power level rapidly could be something that the Marines would be very worried about, and the pirates might either try to recruit him or stay out of his way.
Well, it could be really exciting. Broly is super powerful in the Dragon Ball universe, and if he were in One Piece, he'd probably be like a new kind of overpowered character. Maybe he'd be a pirate with his own crew, or he could be a mysterious figure that the Straw Hats encounter on their journey. His raw strength would be a huge shock to the One Piece world which has its own set of powerful characters.
He could team up with Luffy. Luffy is always open to new allies, and Broly's power would be a great addition to the Straw Hat crew. They could go on adventures together and face powerful enemies.
Yes, there are quite a few. You can start by looking on fanfiction websites like Archive of Our Own or FanFiction.net. Just search for 'broly one piece' and you'll find various stories that combine the power and character of Broly with the rich world of One Piece.
One common theme is power. Since Broly is extremely powerful in his original context, in the One Piece fanfics, his power often disrupts the existing power dynamics. Another theme is the clash of cultures. Broly comes from a different kind of universe, so his values and ways of doing things often clash with the pirates and marines in One Piece.
Another strong opponent could be Hit. Hit has the ability to manipulate time with his time - skip technique. This would give him an edge against Broly. Broly's brute strength might not be enough when Hit can literally disappear and reappear at will, striking at Broly's weak points during his time - skips.
A Dragon Ball Broly fanfic often focuses on the character Broly. It might explore his backstory further, like his origin as a Saiyan. Fanfics could also depict his relationship with other characters in new ways, for example, his interactions with Goku and Vegeta. Some fanfics may give him different power - up scenarios or put him in unique battle situations that were not shown in the original series.
I haven't read this particular fanfic directly, but generally, in a 'bardock saves broly' fanfic, it might involve Bardock using his combat skills and intuition. Bardock, being a Saiyan, has a certain level of power and tenacity. He could potentially save Broly from some sort of danger, like a powerful enemy or a life - threatening situation on their home planet. It could also explore the relationship between the two Saiyans, perhaps Bardock seeing potential in Broly or having a sense of kinship towards him.
Well, it could be about Broly's experiences in hell. Maybe it shows his struggles, his encounters with other hellish beings, or his journey to either find a way out or gain power within that infernal place.
They could start by having a common goal, like protecting a certain planet or a group of people. This shared objective would make them interact more often and gradually understand each other better.
If Broly ended up on Earth, it would likely cause chaos. His immense power could either be a threat or an opportunity for the planet, depending on how the story unfolds.
In Broly and Chirai fanfic, the theme of discovery is quite common. They could be discovering new abilities, new places, or even new aspects of themselves. Another prevalent theme is conflict. It could be an external conflict like fighting against an evil force or an internal conflict within themselves. And of course, the theme of unity. How they come together despite their differences to face challenges is often explored in these fanfics. There are also fanfics that focus on the theme of redemption, where one or both of them have something in their past they need to make up for.