Bulbasaur

It can go for days without eating a single morsel. In the bulb on its back, it stores energy.

National Dex: 001

Regional Dex: 001

Locations in game: Cerulean City - Girl in house if Pikachu's friendship is high enough

Evolutions

Ivysaur - Level 16

Moves learn by leveling up:

Moves learnt by TM/HM