>>39397674Those you receive at the start of a region — yes. They are also untradeable and unbreedable.
You can catch all the starter species in the wild later though, these will be normal random mons you can do whatever you want with.
>>39397646Unobtainable for now. Some are still out there from past events when the rules had been more lax, that ban had to be implemented so these people don't have an unfair advantage.