Your rival in Pokemon platinum is a spiky haired blonde boy originally called Pearl for the game but called Barry in the US/English anime and Jun in the Japanese anime.
Pearl is simply your rival in Pokemon Platinum.
only with hacking
No it can not. I have tried this numerous times and nothing. It gives you no option for your rival to be female thus you can not get a female as a rival.
By beating the Pokemon league 20 times.
He is your rival's dad also the Battle Tower Tycoon.
you fight your rival
none code does not exist
You have to beat Lucas (Rival #2) At some point.
The rival the third time you battle him in survival area
No, you don't battle Ash in Platinum unless you named your rival ash. Other than that, it is impossible.
u catch evry Pokemon and your rival will give u a pass to the battle foniteir.
The rival's starter gets up to level 85