Pokemon Platinum Learn Attack Which Are The Fastest And Good Attacker/defensive Pokemon In Platinum?

Which are the fastest and good attacker/defensive pokemon in platinum? - pokemon platinum learn attack

I know what kind of pokemon plz and the state Seeking them.es pokemon gengar.because not as a defense of ifs me haunter.plz developed fast forward and collected and where to find pokemons them.es following movements in order to learn agility , toxic attack, fast, and any attempt to attack other good.