Erika is my favourite gym leader ever! ^_____^

She's easy to beat if you chose Charmander in the beginning since fire has an advantage over grass. Bulbasaur...I don't really know about him, but I think he should be good. Then Squirtle...you might have a little problem here. Squirtle is weak against grass attacks.

If you don't have a fire Pokémon, you can catch a Growlithe(Red) or Vulpix(Blue...*drools*) in Route #7+8(west of Lavender Town).

When you enter Celadon Gym, make sure you have a Pokémon that knows Cut. Because in her gym, there's those annoying trees and you have to cut them down to get to Erika. Although there's many girls in her gym, she's easy to identify - she's the only one with black hair.

Outside, there's a perverted old man peeping through the windows. *laughs*

If you win, you'll get the Rainbow Badge, and Pokémon up to L50 obey and you get to use HM04, Strength. ^_____^