In all Mainstream Pokemon Games, there are Pokemon that are known as Version Exclusives. This is because all Mainstream Pokemon Games are released in sets of two games, basically the same game with a few differences between the two. One of these differences are the Pokemon found in each game. In Pokemon FireRed, there are certain Pokemon that can be found within it and not in Pokemon LeafGreen, and vice versa. In order to obtain a Version Exclusive not found in one game compared to its counterpart, you must do so by trading for it with someone playing the opposite game.
Pokemon FireRed Version Exclusive Pokemon
Ekans, Arbok
Oddish, Gloom, Vileplume, Bellossom
Psyduck, Golduck
Growlithe, Arcanine
Shellder, Cloyster
Electabuzz, Elekid
Scyther, Scizor
Wooper, Quagsire
Murkrow
Qwilfish
Delibird
Skarmory
Deoxys Attack Form
Pokemon LeafGreen Version Exclusive Pokemon
Sandshrew, Sandslash
Vulpix, Ninetales
Bellsprout, Weepinbell, Victreebel
Slowpoke, Slowbro, Slowking
Staryu, Starmie
Magmar, Magby
Pinsir
Azurill, Marill, Azumarill
Misdreavus
Sneasel
Remoraid, Octillery
Mantine
Deoxys Defense Form
Now that you know all about Version Exclusive Pokemon, Click Here to see what other Pokemon are Unobtainable!