Horsea, Tentacool, Seel, Kabuto or Omanyte, Magikarp, Gyrados, Staryu.
there are none
Tympole and Panpour.
You cant get through unles you get some kind of gameshark code
The three legendary birds, moltres zapdos and articuno and mewtwo and one of the three legendary dogs depending on your starting Pokemon and deoxys
hmmm... you can catch almost all kanto hmm and after u unlock the extra islands you can catch many more...
It's a water type pokemon!
Well the only easy way is to buy an Action Replay. You can't really see every single one because you can't find them in the game. You need some kind of Nintendo Event to at least find Lugia/Ho-oh, Mew or Deoxys, sry.
you need eon ticket, or some other kind of ticket to unlock it, theyre event things tho
Any kind of Grass and Electric pokemon.
Grass and water are best, as is ground.
Natures give your Pokemon stat changes and a personality has well not all natures change stats like Docile nature, personality just makes the Pokemon unique it also sets what kind of pokeblock or poffin the Pokemon likes.
Most legendary pokemon are set in specific locations that are hard to reach for the player unless they complete certain obstacles to reach that point. There is 4 locations that you can find legendary pokemon: Mt Ember, Cerulean Cave, Power Plant, Seafoam Islands. All these locations require your pokemon have some kind of hidden move either being Strength or Surf or even both to reach these areas and inside some of these places you will need to get past certain obstacles to actually get to the legendary pokemon.