The Caterpie/Metapod/Butterfree Line is a very weak set of pokemon however like any pokemon in the game they offer some advantadges
Caterpie[]
Species- Worm Pokemon
Height-1'0 Wieght- 6.4
Type- Bug
Class- Spy Faction- Grass Army
Metapod[]
Species- Cocoon Pokemon
Height- 2'4 Wieght- 21.8
Type- Bug
Class- Spy Faction- Grass Army
Butterfree[]
Species- Butterfly Pokemon
Height- 3'7 Weight- 70.5
Type- Bug/Flying
Class- Spy/Infantry/Air Force Faction- Grass Army