The Champion in Pokemon Platinum is Cynthia, the girl who gave you the egg with Togepi in it.
she is elite 4 champ
dude the order is bug - ground - fire - pysch - then the champ ^^
beat the elite 4 and the champ to win
The rare Pokemon which you can get before the Elite Four in Pokemon Platinum are Giratina, Mesprit, Uxie, and Azelf.
Cynthia elite 4
The last person of the Elite Four in Pokemon Platinum is Lucian, the master of Psychic-type Pokemon. After him is Cynthia, the Champion.
beat elite 4
he is the 4th elite 4.
yes
bertha of the elite 4
Mime.Jr
you have to go to the elite 4 and i think either the champ or the 4th person has one so bring good Pokemon and if you want one either evolve your evee or use an action replay