You have to beat the Pokemon league and see every Pokemon in the sinnoh pokedex.
You can either use R4 cheats or battle in battle tower.
get nantional dex
Capture all the Pokemon On the National Dex.
pichu in Sinnoh Dex exeggutor in National Dex
Regional dex-unown. National dex-tangela.
No.
you get nothing after you get your nantional pokedex..................... it's sucks
the Pokemon for national dex number 124 is jynx and for sinnoh dex number 124 the Pokemon is azurill.
goldeen (or rapidash on the national dex)
you will have seen every Pokemon GOOD JOb!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
yes when you get the national dex
There are 151 Pokemon until you get the national dex