Bulbasaur, because, because I knew the first 4 gym's Bulbasaur would be awesome. Rock, Water, Electric then Grass? Even after that I had to go through psychic and earth. the only problem Bulbasaur would have had been Fire gym.
j/k It was probably Charmander because Charmizard just looks so kick ass.
Or was it Squirtle, because Squirtle was just so hilarious on the show.
I can tell you for certain that the second pokemon was a pidgey.