Question| Picking only 1 Pokemon?

[Island]

Lets say for example in my game I only want the player to get Beedril.
What do I do in order that the player cant choose any other pokemon?
(In fire red. Only 1 pokeball will be seen on the table)
Thanks in advance.

 

[destinedjagold]

The Scrapbox isn't the place to ask for something like those.
Post it in the Simple Questions thread~