iterami/Guides.htm/Pokémon Generation 1
# Pokémon Lowest
Level
16 Pidgey 2
19 Rattata 2
21 Spearow 3
23 Ekans 6
35 Clefairy 8
39 Jigglypuff 3
41 Zubat 6
41 Oddish 12
46 Paras 8
48 Venonat 22
50 Diglett 15
50 Dugtrio 29
56 Mankey 10
58 Growlithe 15
63 Abra 8
66 Machop 15
72 Tentacool 5
79 Slowpoke 15
83 Farfetch'd 3
90 Shellder 15
106 Hitmonlee 30
107 Hitmonchan 30
116 Horsea 15
120 Staryu 15
122 Mr. Mime 8
131 Lapras 15
133 Eevee 25
138 Omanyte 30
140 Kabuto 30