* Route 2: This is your first encounter with Charmander, and the easiest place to catch one.
* Route 4: You can also find Charmander here, but it's less common than on Route 2.
As for Bulbasaur, here's where you can find it:
* Route 22: This is the first location where you can find Bulbasaur. It's a rare encounter, so you'll have to be patient.
* Route 27: Another rare location for Bulbasaur, but worth checking if you're having trouble finding it on Route 22.
* Viridian Forest: After defeating Brock, you can find Bulbasaur here, but only if you've caught a Squirtle or Charmander before, and haven't traded your starter away.
Remember, Bulbasaur is a rare encounter, and its appearance is determined by your starter choice and whether you've traded your starter away. So, be patient and keep checking these locations!