Dustox.
DUSTOX
you can get 52 in the Eterna forest and in the resort area
#52
I think it's Dustox
Battle before the national dex - 52 Battle after the national dex - 68
A Level 52 Houndoom, a Level 55 Infernape, a Level 55 Flareon, a Level 53 Rapidash and a Level 57 Magmortar.
There is no rental Pokemon in in Pokemon platinum
It should learn it at level 52, if you evolve it, Torterra laerns it at level 57.
You cant get Pokemon from Pokemon ranger to platinum!
how to get a togepi in Pokemon platinum
There is no grunt that you can give a Pokemon to in Pokemon platinum.
buy the Pokemon platinum book