To catch any Pokémon, use this code, 01XXD7CF. Replace XX with the codes below.

99 Bulbasaur
09 Ivysaur
9A Venusaur
B0 Charmander
B2 Charmeleon
B4 Charizard
B1 Squirtle
B3 Wartortle
1C Blastoise
7B Caterpie
7C Metapod
7D Butterfree
70 Weedle
71 Kukuna
7D Beedrill
24 Pidgey
96 Pidgeotto
97 Pidgeot
45 Rattata
A6 Raticate
05 Spearow
23 Fearow
6C Ekans
2D Arbok
54 Pikachu
55 Raichu
60 Sandshrew
61 Sandslash
0F Nidoran (female)
A8 Nidorina
10 Nidoqueen
03 Nidoran (male)
A7 Nidorino
07 Nidoking
04 Clefairy
8E Clafable
52 Vulpix
53 Ninetales
64 Jigglypuff
65 Wigglytuff
6B Zubat
82 Golbat
B9 Oddish
BA Gloom
BB Vileplume
6D Paras
2E Parasect
41 Venonat
77 Venomoth
3B Diglett
76 Dugtrio
4D Meowth
90 Persian
3F Psyduck
80 Golduck
39 Mankey
75 Primape
21 Growlithe
14 Arcanine
47 Poliwag
6E Poliwhirl
6F Poliwrath
94 Abra
26 Kadabra
95 Alakazam
6A Machop
29 Machoke
7E Machamp
BC Bellsprout
BD Weepinbell
BE Victreebel
18 Tentacool
9B Tentacruel
A9 Geodude
27 Graveler
31 Golem
A3 Ponyta
A4 Rapidash
25 Slowpoke
08 Slowbro
AD Magnemite
36 Magneton
40 Farfetch'd
46 Doduo
74 Dodrio
3A Seel
78 Dewgong
0D Grimer
88 Muk
17 Shellder
8B Cloyster
19 Gastly
93 Haunter
0E Gengar
22 Onix
30 Drowzee
81 Hypno
4E Krabby
8A Kingler
06 Voltorb
8D Electrode
0C Exeggcute
0A Exeggutor
11 Cubone
91 Marowak
2B Hitmonlee
2C Hitmonchan
0B Lickitung
37 Koffing
8F Weezing
12 Rhyhorn
01 Rhydon
28 Chancey
1E Tangela
02 Kangaskhan
5C Horsea
5D Seadra
9D Goldeen
9E Seaking
1B Staryu
98 Starmie
2A Mr. Mime
1A Scyther
48 Jynx
35 Electabuzz
33 Magmar
1D Pinser
3C Tauros
85 Magikarp
16 Gyarados
13 Lapras
4C Ditto
66 Eevee
69 Vaporeon
68 Jolteon
67 Flareon
AA Porygon
62 Omanite
63 Omastar
5A Kabuto
5B Kabutops
AB Aerodactyl
84 Snorlax
4A Articuno
4B Zapdos
49 Moltres
58 Dratini
59 Dragonair
42 Dragonite
83 Mewtwo
15 Mew