Bulbasuar: Found in pallet town

Geolem: Evolved Graveler must be traded to evolve

Ivysaur: Evolved Bulbasuar (L16)

Ponyta: Found near Cinnaber Island

Venusair: Evolved Ivysaur (L32)

Radiash: Evolved Ponyta L 40

Charmander: Found in pallet town

Slowpoke: Found almost everywhere.

Charmeleon: Evolved Charmander L16

Slowbro: Evolved Slowpoke L37

Charizard: Evolved Charizard L36

Magnemite: Found near Cerulean City and route 10

Squirtle: Found in Pallet town

Magneton: Evolved Magnemite L30

Wartortle: Evolved Squirtle L16

Fartetch'd: Found near Vermilion City

Blastoise: Evolved Wartortle L36

Doduo: Found near routes 16 through 18

Caterpie: Found in Viridian Forest

Dodrio: Evolved doduo L31

Metapod: Evolved Caterpie L7

Seel: Found near Cinnabar Island and Seaform island

Butterfree: Evolved Caterpie L10

Dewgong: Evolved Seel L34

Weedle: Found near route 25

Grimer: Found near Cinnabar Island

Kakuna: Evolved Weedle L7

Muk: Evolved Grimer L38

Beedrill: Evolved Kakuna L10

Shellder: Fond near routes 6,11,19,21

Pidgey: Found everywhere

Cloyster: Evolved Shellder w/ water stone

Pidgeotto: Evolved Pidgey L18

Gastly: Found near pokemon tower

Pigeot: Evolved Pidgeotto L36

Haunter : Evolved Gastly L25

Rattata: Found everywhere

Genger: Evolved Haunter must be traded

Rattacate: Evolved Rattata L20

Onix: Found near Victory road and route 10

Spearow: Almost Found everywhere

Drowzee: Found near route 11

Fearow: Evolved Spearow L20

Hypno: Evolved Drowzee L26

Ekans: Found almost everywhere (R)

Krabby: Found almost anywhere

Arbok: Evolved Ekans (R)

Kingler: Evolved krabby L28

Pikachu: Only Found on routes 2 and 10

Voltorb: Found near route 9

Raichu: Evolved Pikachu w/ Thunder Stone

Electrode: Evolved Voltrob L30

Sandshrew: Found almost everywhere: B

Exeggcute: Found near sufari zone

Sandslash: Evolved Sandshrew (B)

Exeggutor: Evolved exeggcute w/ leaf stone

Nidoran/female: Found near route 22 and Safari Zone

 Cubone: Found near pokemon tower

Nidorina: Evolved nidoran L 16

Marowak: Evolved Cubone L28

Nidoqueen:Evolved Nidoran w/ moon Stone

Hitmonlee: Found in saffron city

Nidoran/male: Found near route 22 and safari zone

Hitmonchan: Found in Saffron City

Nidorino: Evolved Nidoran L16

Lickitung: Fond near Route 18

Nidoknig: Evolved Nidorino w/ moon stone

Koffing: Found near Cinnaber Island

Clefairy: Found near Celadon city, Mt.Moon, and Cerulean City

Weezing: Evolved koffing l35

Clefable: Evolved Clefairy w/ moon stone

Rhyhorn: Found near sufari zone

Vulpix:Found near Cinnabar Island, routes 7 and 8 (B)

Rhydon: Evolved Rhyhorn L42

Ninetales: Evolved Vulpix w/ Fire Stone

Chansey: Found near sufari zone and Cerulean City

Jigglepuff: Found near route 3

Tangela: Found near Cinnabar Iskand and route 21

Wiggletuff: Evolved Jigglepuff with moon stone

Kangaskhan: Found near Sufari zone

Zubat: Found in most caves

Horsea: Found near most water areas

Golbat: Evolved Zubat L22

Seadra: Evolved Horsea L32

Oddish: Found almost everywhere (R)

Goldeen: Found almost everywhere

Gloom: Evolved oddish L22

Seaking: Evolved Goldeen L33

Vileplume: Evolved Gloom w/ leaf stone

Staryu: Found near most water zones

Paras: Found mear Mt. Moon

Starmie:Evolved staryu w/ water stone

Parasect: Evolved Paras L24

Mr. Mime: must trade with ingame character

Venonat: Found near routes 12 through 15

Scyther: Found near safari zone and Celadon City.  (R)

Venomoth: Fvolved Venoat L31

Jnyx: Found in Cerulean city trade for poliwhirl

Diglett: Found in Diglett's cave

Electabuzz: Found in power plant (R)

Dugtrio: Evolved Diglett L26

Magmar: Found near Cinnbar island

Meowth: Found in routes 5 through 8 B

Pinsar: Found near Celedon city and safari zone

Persian: Evolved Meowth L28 (B)

Tauros: Found near safari zone and route18

Psyduck: Found near routes 24 and 25

Megikarp: Found near most water zones

Golduck: Evolved Psyduck

Gyrados: Evolved megakarp L 20

Mankey: Found near routes 5 through 8 (R)

Lapras: Found near Saffron City

Primeape: Evolved Mankey L28 (R)

Ditto: Found near route 13 through 15 , 23, 24 and Victory road

Growlithe: Found near routes 7 and 8, and Cinnabar Island (R)

Eevee: Found in Celedon city

Arcaine: Evolved Growlithe w/ Fire Stone (R)

Vapreaon: Evolved Eevee w/ water stone

Poliwag: Almost found everywhere underwater

Jolteon: Evolved Eevee w/ thunder stone

Poliwhirl: Evolved Poliwag L 25

Flareon: Evolved Eevee w/ Fire Stone

Poliwrath: Evolved Poliwhirl w/ water stone

Porygon: Found in Celedon city

Abra: Found near Cleadon Cityand routes 24 and 25

Omanyte: Found in Cinnabar Island

Kadabra: Evolved Abra L 16

Omaster: Evolved Omanyte L40

Alakazam: Evolved Kadabra must be traded to change

Kabuto: Found in Cinnabar city

Machope:: Found near Victory Road and route 10

Kabutops: Evolved Kabuto L40

Machoke: Evolved Machope L28

Aerodactyl: Found in Pokemon lab

Machamp: Evolved Machoke must be traded to evolve.

Snorlax: Found near routes 12 and 16

Bellsprout: Found almost everywhere (B)

Articuno: Found on SEafom island

Weepinbell: Evolved Bellsprout L21 (B)

Zapdos: Found in Power Plant

Victreebell: Evolved Weepinbell w/ leaf stone (B)

Moltes: Found on Victory Road

Tentacool: Found almost everywhere

Dratini: Found near Celadon City and safari zone

Tentacruel: Evolved Tenatcool L30

Dragonair: Evolved Dratini L30

Geodude: Found in Mt. Moon and Rock Tunnel

Dragonite: Evolved Dragonair L55

Graveler: Evolved Geodude L25

Mewtwo: Found near route 24 in the water cave w/ master ball and game completion.