well, that may be orgin giretina. but for me, a male gliscore is allways the best. if i were you i would make my team on what Pokemon you like best :). hope it helped :)
train your Pokemon alot. i got all of my Pokemon to level 18 before the first gym because i trained them alot.
in diamond and pearl and platinum you can choose chimchar as your starter Pokemon and if you train it to level 16 it will become a monferno.
well you can't because some of eevee's attacks won't work against iron type Pokemon
There is no rental Pokemon in in Pokemon platinum
You need great Pokemon. Train around a little on the Elite Four before challenging Cynthia. P.S. I spelled Cynthia right.-
Train Aron.
you have to train your girl kirlia
Train it to Level 30
Train it to level 45.
e1337 4
There are various good places to train flying types in Pokemon Platinum. A good thing to do would be to use the vs seeker.
victory road
Some people will argue with me but i think the best place to train is at the Pokemon lugue you can battle them over and over again
Train your magneton at Mt. Cornet
You have to train an Eevee by happiness at night
anywhere.
No there is not a code to make Pokemon lvl99 you have to train them.