Castform is #351 in the national pokedex, and it is a Normal type Pokemon.
#351
National Dex: #351
Castform can only be found on the Pokewalker route "Treehouse" after walking enough steps to unlock it and obtaining the National Pokedex.
In the National Pokedex Muchlax is number 446.446
Growlithe is number 58 on the national pokedex.
Gyarados is #130 in the National Pokedex.
It doesn't, Castform doesn't evolve into anything. Actually it sort of evolves. It changes it's from to sunny castform..when it's sunny. Rain castform...when it's raining. Snow-cloud castform...when it's snowing. But it only changes when those affects are used on the battle-field
Croconaw is number 159 in the National Pokedex.
Eevee's number in the national Pokedex is #133. If you don't know what the Pokemon's number is then go to pokemondb.net/pokedex/national It is a great site to find Pokemon's number!!
Sceptile is number 3 in the Hoenn Pokedex and number 254 in the National Pokedex.
It's number 197 in the National Pokedex.
Shaymin is number 492 in the National Pokedex.