Someone recently invented Pokeballs that can catch Humans. They aren't very popular, or legal... but they do exist. They called them 'Catch and Contain Humans' or 'Cach' even though it's often called 'H-Catch'. Though, it was also designed to turn People into Pokémon, which doesn't fully work since that's an entire species change. Instead, it gives the human only a couple Pokémon features, like fur or ears. The 'Cach' isn't very known or popular, so it's basically just a normal Pokémon world RP.