You need to start by studying the character designs and styles in One Piece. Pay attention to the proportions, features, and expressions. Also, practice drawing the unique poses and action scenes.
No, One Piece is created by Eiichiro Oda. He might have a team of assistants to help with various aspects, but the main creative vision and story come from him.
In the world of One Piece, there's no indication that the characters themselves watch fanfiction. Fanfiction is a creation of the fans in the real world, and the in - universe characters are too busy with their own adventures, like Luffy chasing after the One Piece, Zoro training to be the world's greatest swordsman, and Nami navigating the seas. They don't have access to or knowledge of the fan - made stories about them.
One Piece was a Japanese manga series by the author, Oda Kimura. The novel told the story of the protagonist Luffy's adventures in search of the legendary One Piece. The following is a list of the characters in the work:
1 Luffy (Monkey D Luffy)
2 Zoro
3 Nami
4 Usopp
5 Sanji
6 Choba (Chopper)
7 Robin
8 Franky
9 Brook
10 Very Fair (Gollum)
One Piece was a very popular Japanese manga and anime with many characters. The following is a list of all the main characters in One Piece:
1 Monkey D Luffy
2. Rorono Zoro
3 Nami
4 Usopp
5 Sanji
6 Choba (Chopper)
Tony Tony Chopper
8 Brook
9 Franky
10 Very Fair (Jiro)
11 Riley (Rem)
The Master of the Light (Gorooro)
13 Nagato
14 Poya Hancock (Pokémon's Mother)
Chopper's Father
Brook's Father
Merlin
Merlin's Son
19 Red Hair Shanks (Captain of the Red Hair Pirates)
20. Portacas D. Ore
One Piece (One Piece)
22 Boya Hancock's Father
23 Bellamy
Shanks 'Apprentice (Deputy Captain of the Red Hair Pirates)
Franky's Father
Bellamy's Son
27 Golden Lion Jail Break
The Three Judges of Justice Island (Three Generals)
29 Red-Haired Shanks 'Assistant
30 Baroque Workshop (Bar Baroque)
One Piece was a very famous Japanese manga with many important characters. The following are some of the characters who often appear:
1 Luffy (Monkey D Luffy)-The protagonist is a young pirate who dreams of becoming the Pirate King.
2 Rorono Zoro-The protagonist's friend and partner is a swordsman who dreams of becoming the strongest swordsman.
3 Nami-The protagonist's sister is a sailor whose dream is to find the legendary treasure.
4 Usopp-The protagonist's friend is a sniper who was praised by Vice Admiral "Sengoku the Gorilla".
5 Chopper-The protagonist's partner is a reindeer who has eaten mermaid hormones and transformed into a reindeer. His dream is to find a way to turn himself back into a human.
6 Franky-The protagonist's partner is a chef whose dream is to become a great chef.
7 Brook-The protagonist's brother was a musician who had worked with Luffy and others.
8 Golping-A mysterious warrior who was once an ally of Luffy and the others.
9 Perona-A female ninja with the ability of the Devil's Fruit was once a member of the Grass Hat Pirates.
These were just some of the characters that frequently appeared in One Piece. There were many other important characters.
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.
If the One Piece characters watched fanfiction, they might be really confused at first. For example, Luffy might not understand why there are stories about him that are so different from his real adventures. Some of them could be amused, like Chopper seeing cute versions of himself in some fanfictions. But others might be offended if the fanfiction portrays them in a bad way. Zoro might get angry if he's shown as being weak in a fan - made story.