These have to be traded from Red, Blue, Yellow, Gold And Silver or you could use a Cheating Device

These Are Bulbasaur,Ivysaur, Venusaur, Charmander, Charmeleon, Charizard, Squirtle, Wartortle, Blastoise, Vulpix, Ninetales, Mankey, Primeape, Omanyte, Omasatar, Kabuto, Kabutops, Articuno, Zapdos, Moltres, Mewtwo, Mew, Mareep, Flaaffy, Ampharos, Girafarig, Remoraid, Octillery and Celebi
 
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