Mew.
Pokemon number 151 is Manaphy
manaphy you see it in the Pokemon manision.
Number 151 is manaphy
manapy
In yellow, there are only 151 pokemon, number 151 is mew.
In Pokemon platinum, the number 151 is Manaphy. You see him by going to the one mansion with the trophy Pokemon garden in it. In the room with the owner, you will see a book. Read the book to get him in your pokedex. Otherwise, you will need to have a Pokemon ranger event to get Manaphy.
151 is Manaphy and can be found by looking at the book in Mr. Backlot's room in the Pokemon mansion on route 212.
Same as PokemonPearl, 151 is the max number of Pokemon in the starter pokedex.
Pokemon #151 Mew. Pokemon #152 Chikorita.
Manaphy is 151
manaphy
Any of the first 151 pokemon.