These are the Pokemon available in FireRed but absent in LeafGreen. Click on the picture of a Pokemon and you will be directed to the LocationDex so you can know exactly where to find it.
#23 Ekans
#24 Arbok
#43 Oddish
#44 Gloom
#45 Vileplume
#182 Bellossom
#54 Psyduck
#55 Golduck
#58 Growlithe
#59 Arcanine
#90 Shellder
#91 Cloyster
#125 Electabuzz
#239 Elekid
#123 Scyther
#212 Scizor
#194 Wooper
#195 Quagsire
#198 Murkrow
#211 Quilfish
#225 Delibird
#227 Skarmory
#386 Deoxys (Attack Forme)
