You don't. You can only get a Hoenn or Kanto starter for extras.
Prof. Rowan is in D/P/Pt, because it's the sinnoh region. Johto and Kanto, Rowan has nothing to do with. Instead, He's replaced with Professors Elm and Oak.
Prof. Rowan isn't in Sapphire.
Prof. Rowan's lab always stay in Sandgem Town.
he is a prof. on Pokemon.with the starter Pokemon pipulp, turtwig, and chimchar.
Turtwig chimchar piplup
For the shinno pokedex, it is given to you from Prof. Rowan in Sandgem town at his lab. For the national pokedex, it is given to you from Prof. Rowan and Prof. Oak in Prof. Rowan's lab after completeing the Sinnoh pokedex.
For the shinno pokedex, it is given to you from Prof. Rowan in Sandgem town at his lab. For the national pokedex, it is given to you from Prof. Rowan and Prof. Oak in Prof. Rowan's lab after completeing the Sinnoh pokedex. The national pokedex allows you to see more Pokemon and get to diffrent places and such.
ask who created pokemon platinum
Prof rowan is only in diamond and pearl and platinum.
You get it from Prof. Rowan after you get the national pokedex.
you have to see all the Pokemon on the sinodex then prof rowan gives it to you
You get it from Prof. Rowan After completing the Sinnoh Dex.