Once you have access to the sevii islands where you can leave 2 Pokemon in the day care, you could put your hitmon- there with a ditto. it will make a sh*tload of eggs, hatch these to get tyrogue, who will evolve in either Hitmonlee, Hitmonchan, or Hitmontop. The last one is the most dificult to get, because Tyrogue's stats must have a specific match before it can evolve inte Hitmontop...