System Error created a challenge. It hasn't been updated for a while, so I decided to take the challenge myself! System Error has voiced before that it is okay to take it yourself. If you want to take the challenge too, you can use this thread to post your creations; I don't mind.
System Error created some very specific rules, which I will relate, here:
I will only use 5 minutes, because I'm not very good at MS-Paint under time constraint, and I could make good looking stuff in 10 minutes.
Anyway, here we go! (I'm using System Error's format for posting the images, too).
#001 - Bulbasaur
#002 - Ivysaur
#003 - Venusaur
EDIT: Here's some more!
#004 - Charmander
#005 - Charmeleon
#006 - Charizard