Right after the Nugget Bridge, a trainer awaits you on a plateau to give you his Charmander. The young Fire-type, who comes very early in the game, becomes a powerhouse after evolving into Charizard. The Fire/Flying-type dragon Pokemon learns powerful attacks like Flamethrower and Slash and has magnificent Speed and Special. Unlike in Red and Blue, Charizard gets access to Fly. A good alternative to Arcanine or Flareon if they don't tickle your fancy.
Hope I helped