terrakion
In the pokedex, spoink.
Unown is the Pokemon that comes after Snorlax in the Sinnoh Pokedex.
Stunfisk.
its evolved form, masquerain
Ferrothorn
Misdreavus
Glaceon http://www.serebii.net/pokedex-dp/471.shtml
After Latios comes Kyogre, the legendary Pokemon for Sapphire Version.
Rotom does.
Well On the Nintendo 64 it comes with all of the first pokedex from Kanto
well usually Pokemon that are in your pokedex are Pokemon that you have seen in the wild or in battle with another trainer/gym leader/ childhood friend. There are 493 Pokemon up to date. Once the 6th generation (5th Gen. is Sinnoh.) of Pokemon comes out (Pokemon Black and White) there will be more Pokemon.
Its Phione in Pokemon Platinum, You can get it by breeding a Manaphy and a Ditto Actually; Rotom comes after Manaphy in the Platinum pokedex. Kthnx. http://pokemon.marriland.com/platinum/pokedex/list/sinnoh/ Rotom comes after manaphy in the platinum pokedex phione can be made by breeding a manaphy and a ditto but he's actuelly not in the platinum pokedex :D