Ophie
Salingerian Phony
EV-training can begin at any time, as long as it hasn't obtained any EXP from battling, or if it has, you've reduced the points to zero with the EV-reducing Berries. (EXP through the Day Care Center, Rare Candies, or the Pokéwalker don't contribute any points, so they're okay to use.)
A common mistake people make is that they think EV-training begins when they want it to begin. No, the game doesn't read your mind--the moment the Pokémon gets EXP from battling, it gets Effort Points, whether you want it to or not.
Some Wi-Fi battling indeed bring your Pokémon up to Level 100. Some people use this as testing grounds to determine precise IVs.
A common mistake people make is that they think EV-training begins when they want it to begin. No, the game doesn't read your mind--the moment the Pokémon gets EXP from battling, it gets Effort Points, whether you want it to or not.
Some Wi-Fi battling indeed bring your Pokémon up to Level 100. Some people use this as testing grounds to determine precise IVs.