Ash Ketchum finds the Gomu Gomu no mi and eats it.

The Straw Hat Pirates come across a mysterious island in the Grand Line which has been isolated from the rest of the world. There, they meet a young man who calls himself a 'Pokemon Trainer', and throw themselves headfirst into a world-changing new Pokemon adventure.

Mew get's pull through a dimensional portal one day, ending up on the same boat as Monkey D Luffy as he sets out on his adventure. The pair quickly bonding over their zest for life. The only result can be chaos. Skirts the border of crack.

Crazy oceans? Check. Giant monsters that could eat you in a single bite? Check. The craziest crew to ever sail the seas? Double check. The Rubber Man that wants to be King of the Pirates? Triple check. A crewmate thrown into the world because somebody wanted a good laugh? That's me. I have no idea where the ability to turn into Pokémon is even coming from.

The Grand Line was the most dangerous and mysterious sea in the world. But the East Blue held a secret. One that most thought was just a legend, and few knew to be true. Until one day a person chose to embark on the journey of their life

Based on the story of the same name (I was bored one night and this seemed fun).

ash got frame for using drugs and i'm going to reavel him in chapter 3 so let will happen

Kido Chiaki was someone that does not have a dream of his own. But that all changes when he meet his first friend, Jim, and then the encounter of an unfamiliar creature called "Hoopa". Having inherited the dream of finding the Mystic Archipelago from his dying friend, Chiaki set out to the big, blue seas along with Hoopa as well as friends that he meets along the way.

One day, Seth Orion, was summoned to a sub dimension by Hoopa to meet the Legendary Pokemons, he was given a task to traverse to a world full of pirates and other dangers. Find out as he, Hoopa, and his pokemon travel the seas to find allies and enemies. Inspired by Insane Dominator's Fairy Contender. (Rewrite is up)

The grand blue is a vast place, it's 5 (or 6 or 7 depending on how you count them) oceans holding a vast variety of peoples and creatures, not to mention devil fruits. In any other world, the sudden appearance of super powered animals from another world would cause a huge stir, but not here. at least, not until they meet the right people, and those people make a stir themselves.

A scuffle between Dialga and Palkia has some significant repercussions - a great rift in the sky transports a scrappy, battle forged Trainer and her Pokemon into the wild and dangerous world of the Grand Line, and into the life of one Monkey D Luffy and his crew. Leaf has a dream of her own; but can she achieve it when she's torn between two worlds?

ash a childe with incredible powers can he comprehend dem find out.

After stepping through a mirror into a world, Ash must put together his own pirate crew in order to navigate the world better. Can he come through as a pirate? Or will he sink into Davey Jones's locker?

Waking up on a deserted beach with six voices in my head can't be a good thing. I don't know if it became worse when I realised I am in the world of One Piece and those voices are from my old Pokémon Platinum game. Well, at least I'm not defenceless. Turning into a Pokémon is really cool!

After Hoopa rudely ripped Victor from his peaceful vacation on the Alolan islands, he must now traverse a new and dangerous world on his quest to find a way home.

Ace quiere ser campeón de campeones, pero para eso debe derrotar a todos los líderes de gimnasio y luego a los del Alto mando. Ahora, Ace, Sabo y Luffy, deberán embarcarse en un viaje lleno de aventuras, misterios del pasado y un grupo de seres que solamente les harán más complicado el viaje… ASL- AceLu- FemLuffy

Besides One Piece and Pokemon, it also has a mix of Demon Slayer, SAO, Naruto, and Dota 2. Tristan Black was arrogant in the past while in the Green Region, and because of his mistake, he was punished and sent to the Black Region, one of the most dangerous regions in the country of Artheran. Now, let's see what his future travels with the system and Metagross will be like.

AU One Piece Pokemon crossover. Before they can even get a ship Luffy, Zoro and Nami are sent to the Pokemon World, while trying to find a way home they become Pokemon Trainers with the help of newbie trainer Ash Ketchum. Please R&R

Death was like inviting an old friend. And when that old friend suddenly turned into a god, what can you do? Go to another world! Pokemon Empyrean X One Piece

Meloetta farts a musical melody for the Straw Hat pirate crew.

Side story of "Legend of the Beastman." A couple of days after Ash was named Vice Captain of Thousand Sunny, an unexpected visitor stops by. One-shot for April Fool's Day. Rated for language.

Ariella was given a task by Arceus to save and help Pokemon from another world. I do not own Pokemon or One Piece but only my OC and some of my original plots.

Sabo would like to thank Ace, his best friend and brother, for being such a pain that he'd remember him and Luffy when he's already made a choice that he may not come back from. Because it was definitely his wanted poster that kick started this memory train. Now, he's in some weird place with weird things, and he wants to go home!

You all have heard of Mew, the legendary psychic pokemon, but have you heard of Nyx. Nyx is Mew's younger sister, who is a little too curious for her own good. Read along as Nyx joins the Straw Hat's on their adventure. I give all credit to Eiichiro Oda and Satoshi Tajiri. I only own my oc.

Long ago way before the time of pirates and before the Pokemon disappeared. There was a great big battle. All the evil organizations that once were defeated by children of the age of 10 came together and allied. Together they were all Unstoppable and they created hybrid Pokemon. Those hybrid Pokemon we're mixed with the DNA of legendary Pokemon along with regular Pokemon.