Pokemon Ruby Red and Sapphire Blue

Baltoy and Claydol are already in Pokemon Blazing Gold and Ashen Silver
# Treecko
# Grovyle
# Sceptile
# Torchic
# Combusken
# Blaziken
# Mudkip, the Axolotl Pokemon (Water)
# Marshtomp, the Vassal Pokemon (Water/Ground)
# Swampert, the Feudal Lord Pokemon (Water/Ground)
# Poochyena
# Mightyena
# Zigzagoon
# Linoone
# Wurmple
# Silcoon
# Beautifly
# Cascoon
# Dustox
# Lotad
# Lombre
# Ludicolo
# Seedot
# Nuzleaf
# Shiftry
# Taillow
# Swellow
# Wingull
# Pelipper
# Ralts
# Kirlia
# Gardevoir
# Gallade
# Surskit
# Masquerain
# Shroomish
# Breloom
# Slakoth
# Vigoroth
# Slaking
# Nincada
# Ninjask
# Shedinja, the Ronin Pokemon (Bug/Ghost)
# Whismur, the Radio Static Pokemon (Normal/Electric)
# Loudred, the Amped Up Pokemon (Normal/Electric)
# Exploud, the Bombastic Pokemon (Normal/Electric)
# Makuhita
# Hariyama
# Nosepass
# Probopass
# Skitty
# Delcatty
# Sableye, the Jewel Thief Pokemon
# Mawile
# Aron
# Lairon
# Aggron
# Meditite
# Medicham
# Electrike
# Manectric
# Plusle
# Minun
# Volbeat (Bug/Electric)
# Illumise (Bug/Fire)
# Budew
# Roselia
# Roserade
# Gulpin
# Swalot
# Carvanha
# Sharpedo
# Wailmer
# Wailord
# Numel
# Camerupt
# Slugma
# Magcargo
# Torkoal
# Spoink
# Grumpig
# Spinda
# Trapinch
# Vibarava
# Flygon
# Cacnea
# Cacturne
# Swablu
# Altaria
# Zangoose
# Seviper
# Lunatone
# Solrock
# Barboach
# Whiscash
# Corphish
# Crawdaunt
# Lileep
# Cradily
# Anorith
# Armaldo
# Feebas
# Milotic
# Castform
# Kecleon
# Shuppet
# Banette
# Duskull
# Dusclops
# Tropius (Grass/Dragon)
# Chingling
# Chimecho
# Absol
# Snorunt
# Glalie
# Froslass
# Spheal
# Sealeo
# Walrein
# Clamperl
# Huntail
# Gorebyss
# Relicanth
# Luvdisc
# Bagon
# Shelgon
# Salamence
# Beldum
# Metang
# Metagross
# Regirock
# Regice
# Registeel
# Latias
# Latios
# Kyogre
# Groundon
# Rayquaza
# Jirachi (Psychic/Fairy)
# Deoxys (Psychic/Poison)