One idea could be that the Pokemon trainers are in the world of the Teenage Mutant Ninja Turtles. They could team up with the turtles to fight against a common enemy, like an evil organization that is trying to take over both the Pokemon world and New York. For example, Team Rocket could be working with some of the villains from the TMNT universe.
One idea could be a story where the Teenage Mutant Ninja Turtles discover a hidden mecha technology in the sewers. They have to figure out how to use it to defeat a new, powerful enemy. Maybe it gives them new abilities like enhanced speed or the power to fly.
Definitely. TMNT started as a comic. Its success in the comic world led to its adaptation into various forms of media. The comic version was the original source that sparked the franchise.
An idea for a male OC could be Leo Jr. He's the son of Leonardo. He has all the skills his father has, like being an expert swordsman. He's also really into technology and has modified his katana to have some cool tech features, like a built - in grappling hook.
Start with a common goal for both groups. For example, they need to protect a powerful artifact that has significance in both the Pokemon and TMNT worlds. This gives them a reason to work together.
The origin of the Teenage Mutant Ninja Turtles is really interesting. There was this mutagen that was created. Four turtles happened to come into contact with it in the sewers. Along with them, a rat was also affected by the mutagen. This rat, Splinter, had been observing the ways of ninjutsu from his owner before the mutation. After they all mutated, Splinter taught the turtles ninjutsu. They grew up in the sewers and became the Teenage Mutant Ninja Turtles we know. Their existence was soon discovered by April O'Neil, and they got involved in various battles against the evil forces in New York, especially the Foot Clan led by the menacing Shredder.