nothing really, you can keep fighting them
When you beat the elite four.
Collect data for all of the different kinds of Pokemon
You have to beat the Elite Four again.
yes you need to beat the elite four first and he should be there
You then have to beat Cynthia
Finish your Pokedex And Beat The Elite Four once then the second time they have stronger Pokemon
get strong EFFECTIVE Pokemon
You have to level up your pokemon a lot and make them stronger.
When you beat the elite four.
Collect data for all of the different kinds of Pokemon
'ZAPDOS' is found at the power plant, you do not have to beat RED but you will have had to beat the elite four for the second time.
nowhere. You can just do it again to get experience.
Beat the Elite Four a second time and come back.
You have to beat the Elite Four again.
beat the elite four and the champion.
You need to beat the elite four and then beat the Pokemon league champion
there are no specific Pokemon that can automatically beat the elite four. HOWEVER, ( i speak from experience) i beat the elite four with one Pokemon whitch was Samurott. i suggest using Samurott 2. hope i helped! :) - Raven