Bulbasaur
I am surprised Bulbasaur is out of the rankdown. I expected it to be in the Top 20. Some shady people though! Bulbasaur is the very first grass (who is also a poison pokemon) starter pokemon. He evolves into Ivysaur (which is my favorite of the 3 pokemon) at level 16. Its next evolution is Venusaur at level 32. Bulbasaur was my last favorite of the Gen 1 starters, but it had its moments. On one of my play through I gave it Solarbeam, and it dominated. Bulbasaur is weak to Fire, Ice, Flying and Psychic type moves. However Bulbasaur is resistant to fighting, water, electric, grass and fairy.
I know a huge part of Bulbasaurs popularity is from the anime. It has a very distinct personality. To this date, Ashes bulbasaur has not evolved. Sorry Victoria, I did not expect this to be the result.