Also , instead of the PokÃ mon given to the player at the start of Red and Blue ( the player can choose Bulbasaur , Charmander , or Squirtle ) in Yellow the only possible choice is Pikachu , which represents the PokÃ mon Ash started with in the anime . For example , in PokÃ mon Red and Blue , the player has the choice of starting with Bulbasaur , Squirtle , or Charmander .