For Luffy, I think a Pikachu would be a great fit. Just like Luffy, Pikachu is full of energy and has a really positive attitude. They both are also very brave and not afraid to take on opponents much stronger than themselves. For Zoro, a Scizor would be suitable. Scizor is a strong and battle - hardened Pokemon, much like Zoro with his swordsmanship skills. Nami could be paired with a Meowth. Meowth loves shiny things, just like Nami loves money and treasure.
First, you need to have a clear concept. Decide how you want to merge the two universes. For example, will Pokemon be native to the One Piece world or are they brought in from another dimension? Then, create engaging characters. Maybe a trainer who is also a pirate wannabe. Outline your plot, like a quest to find a rare Pokemon that also has some connection to a One Piece mystery.
One good One Piece Pokemon fanfic is 'Pirate Trainer on the Grand Line'. It combines the adventurous world of One Piece with the unique creatures of Pokemon in an exciting way. The story follows a trainer who gets swept into the One Piece universe and has to use his Pokemon skills to survive among pirates.
Yes, I recommend the novel I'm a Pirate Trainer to you. This novel was about a trainer who took six Pokémon on an adventure in One Piece. It combined Pokémon, and One Piece. I hope you like my recommendation.
Luffy is often a popular character in these fanfictions. His carefree and adventurous nature can be easily paired with the world of Pokemon. He might go on quests to catch rare Pokemon or use Pokemon to help his friends. Another popular one could be Nami, as she could use her intelligence to strategize in Pokemon battles.
One interesting concept could be the idea of Pokemon existing in the One Piece world. For example, trainers in the Straw Hat crew. Luffy might befriend a really strong and unique Pokemon, like a Pikachu with a Conqueror's Haki ability. It would add a whole new dynamic to their adventures as they explore the Grand Line.
One idea could be a story where Pikachu ends up on the Grand Line in the One Piece world. He teams up with Luffy and his crew, using his electric attacks to help them in battles against the Marines or other pirates. Another could be a fanfic where the Pokemon trainers are like pirates, traveling from island to island in the One Piece world to catch different Pokemon species that are native to those islands.
Shankish and Sauron were two important characters in One Piece. They had a deep friendship and a relationship of mutual trust. In some of One Piece's doujinshi works, they might have some special interactions or pairing. However, due to the complexity of One Piece's storyline and character setting, the specific doujinshi works may vary from author to author, so there is no guarantee that all doujinshi works are accurate.
Goku would probably be very friendly with Luffy. They both love to fight strong opponents and have a sense of adventure. Goku might be a bit confused by some of the wacky things in the One Piece world like the Devil Fruits at first, but he'd quickly adapt. He'd also likely be impressed by the determination of the other characters like Zoro and Sanji.
First, decide on the Pokemon you want to feature. It could be your favorite ones or ones that you think would have an interesting dynamic. For example, a mischievous Meowth and a serious Squirtle. Then, come up with a basic plot. Maybe they get lost in an unknown forest and have to find their way back while facing various obstacles.