Pokémon Ruby Version, Sapphire Version, and Emerald Version - Base Stats (Effort Values)
Base stats (EVs) indicate the amount of training that a Pokémon has made. Here are the basics on base stats (EVs).
- How base stats (EVs) are raised - Whenever a Pokémon earns Exp. Points in battle, usually by defeating foe Pokémon, it also earns a number of base stat points (EVs) depending on the species of the Pokémon defeated. A Pokémon doesn’t earn base stat points (EVs) in battle if its level is 100 (since it doesn’t earn Exp. Points at that level). A Pokémon’s base stats (EVs) are not raised while it’s deposited in the Day-Care or when a Rare Candy is used on it.
- Limits - Each base stat (EV) ranges from 0 to 255. A Pokémon starts with base stats (EVs) of 0 for all stats, and its base stat (EV) total can’t exceed 510. (The six stats are HP, Attack, Defense, Speed, Special Attack, and Special Defense base stat points (EVs) are also earned in that order.) A Pokémon with 510 base stat points (EVs) can receive an Effort Ribbon in Slateport’s outdoor market.
- Base stats (EVs) and stats - For a level 100 Pokémon, every 4 base stat points (EVs) correspond to 1 stat point. Because of this, only 508 base stat points (EVs) overall and 252 base stat points (EVs) in a certain stat (for a stat increase of 63) are required to raise a Pokémon’s stats as much as possible.
- The "box trick" - When a Pokémon is placed in a PC storage box, the game stores, among other things, its Exp. Points (to calculate its level), its individual values, and its base stats (EVs). When the Pokémon is removed from the storage system, its stats are recalculated based on its base stats (EVs), without actually gaining a level. This effect is sometimes called the "box trick."
Some kinds of items can affect base stats (EVs):
-
Stat enhancers
- Stat enhancers, also known as "vitamins", increase the base stat (EV) of
the corresponding stat by 10, but not to more than 100. Each stat
enhancer only takes effect if the base stat (EV) for that stat is less than
100. After a stat enhancer is used and takes effect, all the Pokémon’s
stats are recalculated.
- HP - HP Up (won’t have any effect on a Shedinja, however)
- Attack - Protein
- Defense - Iron
- Speed - Carbos
- Special Attack - Calcium
- Special Defense - Zinc
-
Stat-reducing Berries
- In Pokémon Emerald Version, certain kinds of Berries decrease the base stat (EV) of the corresponding stat by 10. If such a Berry reduces the base stat (EV) this way, all the Pokémon’s stats are recalculated.
- HP - Pomeg Berry (Won’t have any effect on a Shedinja if its friendship is 255, whether or not its HP base stat (EV) is 0.)
- Attack - Kelpsy Berry
- Defense - Qualot Berry
- Speed - Tamato Berry
- Special Attack - Hondew Berry
- Special Defense - Grepa Berry
- Macho Brace - The Macho Brace will double the base stat points (EVs) that a Pokémon holding it will earn in battle.
- Pokérus - Although Pokérus is not an item, it too will double the base stat points (EVs) that a Pokémon infected with it will earn in battle, even after it’s cured of Pokérus.