GrassPoison

1.Bulbasaur

GrassPoison

2.Ivysaur

GrassPoison

3.Venusaur

Fire

4.Charmander

Fire

5.Charmeleon

FireFlying

6.Charizard

Water

7.Squirtle

Water

8.Wartortle

Water

9.Blastoise

Bug

10.Caterpie

Bug

11.Metapod

BugFlying

12.Butterfree

BugPoison

13.Weedle

BugPoison

14.Kakuna

BugPoison

15.Beedrill

NormalFlying

16.Pidgey

NormalFlying

17.Pidgeotto

NormalFlying

18.Pidgeot

Normal

19.Rattata

Normal

20.Raticate