use an action replay
you can't. its impossible UNLESS you are on a ROM WITH CHEATS!
there was a code to fill in missing numbers for the pke dex but it would completely mess up your game.
You have see to many different pokemons. Then you will fill it (you have to every Pokemon to get national pokedex).
You should go to a different website for that information becase this website should not have to give out hacking or illegal information. That's not hacking OR illegal information lol
you need 200 Pokemon to fill the whole pokedex
AnswerThere is an action replay cheat to fill your pokedex or battle flint in the elite 4
After the elite four, you fill up your sinnoh pokedex (by seeing all the Pokemon in sinnoh), and then go to Sandgem town, and talk to professior rowan in his lab, to get the national pokedex, and then explore the island that you take the boat from snowpoint city to get to, and fill up the national dex
To research Pokemon, and fill up their Pokedex.
you have to fill up your pokedex
ALL
catch 80 Pokemon
There is an Action Repley cheat for it that will automatically complete your Poke'dex that gives you the info that you would if you caught them. When you get the National Dex it will automatically complete the rest of your Poke'dex. A Poke'ball icon will appear next to all the Pokemon as if you have caught them. Hope that was enough Get info even on something like this :>