Ok, so, you can be a pokemon or a trainer, but no legendaries. Also, you start out with NO POKEMON. I'll explain the story now.
Welcome, to Camp Claydol Pokemon Summer Camp! Here, you can learn anything and everything there is to know about pokemon! Please, leave ANY AND ALL PAST POKEMON BEHIND! Bring only what you need, as food, water, and pokeballs will be supplied! So come to Camp Claydol today, and learn everything about pokemon!