1 | Bulbasaur | Ruby | Trade, Event2 | Ivysaur | Ruby | Trade | 3 | Venusaur | Ruby | Trade | 4 | Charmander | Ruby | Trade, Event | 5 | Charmeleon | Ruby | Trade, Evolve Charmander (Lv. 16) | 6 | Charizard | Ruby | Trade, Event | 7 | Squirtle | Ruby | Trade, Event | 8 | Wartortle | Ruby | Trade, Evolve Squirtle (Lv. 16) | 9 | Blastoise | Ruby | Trade, Event | 10 | Caterpie | Ruby | Trade | 11 | Metapod | Ruby | Trade | 12 | Butterfree | Ruby | Trade | 13 | Weedle | Ruby | Trade | 14 | Kakuna | Ruby | Trade | 15 | Beedrill | Ruby | Trade | 16 | Pidgey | Ruby | Trade | 17 | Pidgeotto | Ruby | Trade | 18 | Pidgeot | Ruby | Trade | 19 | Rattata | Ruby | Trade | 20 | Raticate | Ruby | Trade | 21 | Spearow | Ruby | Trade | 22 | Fearow | Ruby | Trade | 23 | Ekans | Ruby | Trade | 24 | Arbok | Ruby | Trade | 25 | Pikachu | Ruby | Safari Zone | 26 | Raichu | Ruby | Evolve Pikachu (Thunder Stone) | 27 | Sandshrew | Ruby | Routes 111, 113 | 28 | Sandslash | Ruby | Evolve Sandshrew (Lv. 22) | 29 | NidoranF | Ruby | Trade | 30 | Nidorina | Ruby | Trade | 31 | Nidoqueen | Ruby | Trade | 32 | NidoranM | Ruby | Trade | 33 | Nidorino | Ruby | Trade | 34 | Nidoking | Ruby | Trade | 35 | Clefairy | Ruby | Trade | 36 | Clefable | Ruby | Trade | 37 | Vulipx | Ruby | Mt. Pyre Exterior | 38 | Ninetales | Ruby | Evolve Vulpix (Fire Stone) | 39 | Jigglypuff | Ruby | Route 115 | 40 | Wigglytuff | Ruby | Evolve Jigglypuff (Moon Stone) | 41 | Zubat | Ruby | Cave of Origin, Granite Cave, Victory Road (Walking)
| Meteor Falls, Seafloor Cavern, Shoal Cave (Surfing and walking) 42 | Golbat | Ruby | Cave of Origin, Shoal Cave, Sky Pillar
| Meteor Falls, Seafloor Cavern, Victory Road (Surfing and walking) 43 | Oddish | Ruby | Routes 110, 117, 119, 120, 121, 123, Safari Zone | 44 | Gloom | Ruby | Routes 121, 123, Safari Zone | 45 | Vileplume | Ruby | Evolve Gloom (Leaf Stone) | 46 | Paras | Ruby | Trade | 47 | Parasect | Ruby | Trade | 48 | Venonat | Ruby | Trade | 49 | Venomoth | Ruby | Trade | 50 | Diglett | Ruby | Trade | 51 | Dugtrio | Ruby | Trade | 52 | Meowth | Ruby | Trade, Event | 53 | Persian | Ruby | Trade | 54 | Psyduck | Ruby | Safari Zone | 55 | Golduck | Ruby | Safari Zone (Surfing) | 56 | Mankey | Ruby | Trade | 57 | Primeape | Ruby | Trade | 58 | Growlithe | Ruby | Trade, Event | 59 | Arcanine | Ruby | Trade | 60 | Poliwag | Ruby | Trade | 61 | Poliwhirl | Ruby | Trade | 62 | Poliwrath | Ruby | Trade | 63 | Abra | Ruby | Granite Cave | 64 | Kadabra | Ruby | Evolve Abra (Lv. 16) | 65 | Alakazam | Ruby | Evolve Kadabra (Trade) | 66 | Machop | Ruby | Route 112, Fiery Path, Jagged Pass | 67 | Machoke | Ruby | Evolve Machop (Lv. 28) | 68 | Machamp | Ruby | Evolve Machoke (Trade) | 69 | Bellsprout | Ruby | Trade, Event | 70 | Weepinbell | Ruby | Trade | 71 | Victreebel | Ruby | Trade | 72 | Tentacool | Ruby | Route 128, Ever Grande City (Surfing, Old Rod)
| Sootopolis City (Old Rod) Abandoned Ship (Surfing or fishing) Routes 103, 105, 106, 107, 108, 109, 110, 115, 118, 119, 121, 122, 123, 124, 125, 126, 127, 129, 130, 131, 132, 133, 134, Slateport City, Pacifidlog Town, Mossdeep City, Lilycove City, Dewford Town, Shoal Cave, Seafloor Cavern (Surfing, Old/Good Rod) 73 | Tentacruel | Ruby | Abandoned Ship (Surfing and Super Rod) | 74 | Geodude | Ruby | Routes 111, 114, Victory Road, Safari Zone (Rock Smash)
| Granite Cave (Walking and Rock Smash) 75 | Graveler | Ruby | Victory Road (Rock Smash) | 76 | Golem | Ruby | Evolve Graveler (Trade) | 77 | Ponyta | Ruby | Trade | 78 | Rapidash | Ruby | Trade | 79 | Slowpoke | Ruby | Trade | 80 | Slowbro | Ruby | Trade | 81 | Magnemite | Ruby | New Mauville | 82 | Magneton | Ruby | New Mauville | 83 | Farfetch'd | Ruby | Trade | 84 | |