It may be riolu, which you can obtain only in an egg on Iron Island. __________________________________ no the last one is giratina. if you have the national pokedex then the last one is an arceus! they're AWESOME!
The last Pokemon in the sinnoh dex is Giratina, and the last one in the national dex is Manaphy.
First Sinnoh theme: Diamond and Pearl Second Sinnoh theme: DP Galactic Battle Third Sinnoh theme: DP Battle Dimension Last Sinnoh theme: DP Sinnoh League Victors
Garatina...
cyndaquil
It is manaphy.
if you meen the national dex then you need to find every Pokemon in the sinnoh pokedex
I think its when ash is don at the Sinnoh region and goes back to pallet
go to the Pokemon league
pikachu, staraptor, gible, torterra, monferno and floatzel
Garchomp go in the Pokemon league the last trainer of it.
no ash i think ash is continuing from his last adventure as he still has pikachu who he got in the first season plus that would mean that in black and white ash would be younger than ten and you have to be ten to have a pokemon
I don't know about latest, but last in national Dex is #493 Arceus, Sinnoh it's #150 Palkia and #151 Manaphy.