Dialga,Palkia,Giritina, Darkri, and i think Cressilia....... im not too sure about Palkia, that might only be in Pokemon pearl you can catch palkia
The rare Pokemon which you can get before the Elite Four in Pokemon Platinum are Giratina, Mesprit, Uxie, and Azelf.
There are probly a total of 8 rare candies in Pokemon platinum
Mismagius cannot be caught in platinum.
Hearthome city.
Golden Arceus
On Pokemon Platinum, Carvanha can be caught in the Great Marsh.PLEASE NOTE: REQUIRES SUPER ROD.
You have to find poke balls in the wild which contain rare candy in them.
there are lots of ways to get rare Pokemon in platinum. For example, on January 30 2010 go to a GameStop and you can get the Pikachu-colored Pichu.
OK how do you get Darkrai,Articuno,and Arceus on Pokemon Platinum? buy them at the rare Pokemon store
you cant
P.S. it will freeze up after caught.
No, but skitty can be caught on route 222 in Pokemon diamond pearl and platinum