172
Pichu is number 172 in the National Pokédex.
In Platinum dex' its Dusknoir in National dex' its Sunkern.
no you dont need the national dex p.s. trade shiny pichu to HG SS to get a special pichu
In the sinnoh dex: porygon In the national dex: sunflora
In the Sinnoh dex: Ambipom. In the national dex: Kadabra
if its the sinnoh dex its barboach and if its the national dex its slowbro.
spiritomb in the sinnoh dex lickitung in the national dex
National Dex: Igglybuff Sinnoh Dex: Togetic
Cranidos in the Sinnoh Dex, Fearow in the National Dex
pichu in Sinnoh Dex exeggutor in National Dex
catch ekans and evolve it
Omastar in the National Dex