Meditite and evolutions. (You can get them in Sapphire)
All kanto Pokemon. PS: Some like tentacool and goldeen can be found by fishing or Surfing on water, kanto starter are given by Scott (The guy who takes you to the Battle Frontier, you can find him in a small house on the left of the battle tower) when you complete the national Pokedex.
All Jhoto Pokemon. PS:Some can be found in the safari zone. For example:stantler, gligar and mareep, jhoto starters are given by professor Birch when you complete the Hoenn Pokdedex.
All sinnoh Pokemon.
Zangoose
Roselia
Lunatone
Maybe I forgot some, but I think I got them all.
Umm for one... Pokemon cant get hungry.
u cant get Pokemon food u need to make poffins
you cant get every Pokemon be4 you get the national dex
srry you cant unless that pokemon learns it when u level it up
yep, you cant use it
you cant be a Pokemon in Pokemon diamond
you cant you cant
you cant get Lugia in Pokemon Diamond
You cant get to hoenn on pokemon diamond. Sorry.
you cant
you cant get that Pokemon.
you cant get it on diamond or pearl!
you cant
You cant
you cant...... or at least from what i have heard u cant
you cant
you cant unfourtanately