Then you beat them 100 times and win :)
absolutely nothing.
Nothing. Don't waste your time.
i don't know but once you beat it 20 times you can fight proffessor rowan. he has lvl 100 torterra, infernape and empoleon. then your mom will give you every Pokemon you don't have.
you get him after you beat the Elite Four 1,000 times. Trust me, it took me 1 year to beat the Elite Four just 500 times.
nothing
After 20 wins, your rival's Pokemon level up.
1
Then you beat them 100 times and win :)
You don't need to defeat the Elite 4 20 times, your rival is at the Fight Area every Saturday.
beat the elite four 1000000000 times and you will be awarded with unlimited cherish balls
absolutely nothing.
on Pokemon diamond and pearl,you have to beat the elite four 3 times in platinum you can get a dusclops in the spring path.
yes, you beat them ten times
You win a million dollars!
beat the elite four 100 times to get fire, ice, and thunder punch all at once
Absolutely Nothing.