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Explanation of EVs:

EVs (or Effort Values) are gained when battling Pokemon. Each Pokemon that you battle gives out a certain amount of Effort Values. Effort Values are hidden from view though, so it is up to you to keep track of this.

Each Pokemon gain up to a total of 510 EVs. Every 4 EVs equals one stat point gained when you level up (if you gained 4 EVs of that stat while training). Out of those 510, 508 of them are usable (508 is divisible by 4 and 510 is not). However, each stat can only have a maximum of 252 usable Effort Values. That means you can max out 2 different stats. 252 EVs translates into 63 stat points. (63 times 4 is 252). Also, this can be supplemented by a nature. (A beneficial nature adds 10% more stat points overall, while a hindering nature takes away 10% overall. So a Pokemon with an Adamant nature gets 10% MORE stat points in Attack but 10% LESS stat points in Special Attack).

Places to EV train/Pokemon to Battle:

Ruby/Sapphire/Emerald
HP
- Whismur - Rusturf Tunnel - 1 EVs
- Expert Timothy - Route 115 - 2 EVs
- Tuber Lola - Route 109 (on land) - 6 EVs
Attack
- Shuppet (rare in Ruby version) - Mt. Pyre - 1 EV
- Triathlete Maria - Route 117 - 2 EVs
- Triathlete Dylan - Route 117 - 2 EVs
- Black Belt Nob - Route 115 - 8 EVs
Defense
- Clamperl - Underwater - 1 EVs
- Pokemaniac Steve - Route 114 - 5 EVs
- Kindler Bernie - Route 114 - 4 EVs
- Hiker Trent - Route 112 - 9 EVs
Special Attack
- Spinda - Route 113 - 1 EVs
- Triathlete Abigail - Route 110 - 2 EVs
- Triathlete Benjamin - Route 110 - 2 EVs
Special Defense
- Tentacool - Abandoned Ship - 1 EV
- Tentacruel - Abandoned Ship - 2 EV
Speed
- Electrike, Wingull, Zigzagoon - Route 118 - 1 EV
- Linoone, Manectric - Route 118 - 2 EVs
- Pokefan Isabel - Route 110 - 2 EVs
- Twins Amy + Liv - Route 103 - 2 EVs

FireRed/LeafGreen

HP
- Caterpie - Viridian Forest - 1 EV
- Clefairy - Mt. Moon - 2 EVs
- Jigglypuff - Route 3 - 2 EVs
- Dunsparce - Three Island (through cave) - 1 EV
Attack
- Paras - Mt. Moon (B1) - 1 EV
- Ekans - Route 4 - 1 EV
- Pokemon Ranger Nicolas - Sevault Canyon - 6 EVs
Defense
- Metapod / Kakuna - Virdian Forest - 2 EVs
- Geodude - Victory Road, Mt. Moon, Cerulean Cave, Rock Tunnel - 1 EV
- Tangela - Route 21 - 1 EV
- Biker Ruben - Cycling Road - 6 EVs
Special Attack
- Oddish - Route 24 - 1 EV
- Gastly - Lavender Tower - 1 EV
- Haunter - Lavender Tower - 2 EVs
- Slugma - Mt. Ember (B3) - 1 EV
- Pokemon Ranger Madeline - Sevault Canyon - 6 EVs
Special Defense
- Tentacool - One Island (water) - 1 EV
- Tentacruel - One Island (water) - 2 EVs
- Aroma Lady Miah - Sevault Canyon - 6 EVs
Speed
- Rattata - Route 1 / Route 4 - 1 EV
- Pidgey - Route 1 / Route 2 - 1 EV
- Spearow - Route 4 - 1 EV
- Zubat - Mt. Moon - 1 EV
- Diglett - Diglett's Cave - 1 EV
- Dugtrio - Diglett's Cave - 2 EVs
- Picnicker Becky - Route 115 - 6 EVs

Diamond and Pearl *Wild Pokemon*


HP:
~Bidoof-route 201
~Shellos at Valley Windworks north of ignore the Buizel (+1 each)
~Gastrodons at Fuego Ironworks or Route 213 ignore Floatzel (+2 each)
~Gastrodons outside of Pal Park (+2 each)


Attack:
~Kricketune and Bidarel at route 212 (rainy route) (+2 each)
~Bibarels and Machop (2 EVs and 1 EV respectively) Route 208
~Machokes and Snovers at Acuity Lakefront (2 Evs and 1 EV respectively)


Defense:
~Cave with Geodudes and Hippopotas off route 214 (+1 each) (Ruin Maniac's Cave)
~Onix and Gravelers on Iron Island in the second room ignore Golbats (+1 Onix) (+2 Gravelers)
~Geodudes and Onix in the first room (Oreburgh Mines) (+1 each)


Special Attack:
~Psyduck and Golduck - Sandgem Town (Use Surf)
~Gastly- Lost Tower
~Gastly at the Old Chateau in Eterna Forest (+1 each) (Haunters +2) (Gengars +3)
*Need GBA Game in GBA slot and National Pokedex for Haunters and Gengars*
~Golducks surfing in the water at the Resort Area (+2 each)


Special Defense:
~Surfing any ocean/sea area for Tentacools (+1each)
*North of 8th gym town has been good ignore Pellipers* (Mantykes +1)


Speed:
~Starly - Route 201
~Raticates and Fearows Northwest of the Fight Area (+2 each) *name?*
~Zubats in a cave (+1 each)
~Golbats in Victory Road (in water, you only find Golbats) (+2 each)

__________________________________________________ ___________________________________
*Vs Seeker Trainers*


HP:
~Route 209 - Cowgirl - L14, 15, 15, 15, and 16 Bidoof (5 HP)

Attack:
~Route 203 - Lass - L38 Staraptor, L38 Bibarel (5 Attack)

Defence:
~Route 212 - Collector - L17, 18, and 19 Geodude (3 Defense)
~Route 221 – Collector – L51, 52, and 53 Hippopotasu (3 Defense)

Special Attack:
~Route 214 - Collector - L20, 22, and 24 Roselia (6 Sp. Attack)

Special Defence:
~Route 210 (foggy section) - Ninja Boy (upper level) - L27 Dustox (3 Sp. Defense)

Speed:
~Route 205 (on the water bridge) - Fisherman - L10, 10, 10, 10, 10, and 10 Magikarp (6 Speed)

__________________________________________________ ___________________________________
*Power Items and Pokerus*


Power Items:
These items boost the number of EVs gained per battle with a pokemon in their respective stat.

Power Ankle: Boosts Speed EVs

Power Band: Boosts Special Defense Evs

Power Belt: Boosts Defense EVs

Power Bracer: Boosts Attack EVs

Power Lens: Boosts Special Attack EVs

Power Weight: Boosts HP EVs


Equation goes like this:

x + y = t

x = EV's from pokemon
y = EVs boosted from Power Items (+4)
t = Total EVs


Now with Pokerus we multiply the whole left side of the equation by 2 so...

2(x + y) = t

Now assume we have a pokemon that grants 2 points per battle...

2(2 + 4) = 12
Speeding up EV Training

Macho Brace
- Lowers the speed of the holder, but doubles the amount of EVs you get from one battle. (example: If you fight a Starly for Speed EVs, you get 2 EVs instead of the normal 1 EV.

Pokerus
- Doubles the amount of EVs you get from a battle.

Vitamins
- Adds 10 EVs to a stat, but stops working if that stat already has 100 more EVs in it.

EXP. Share
- Not only does the wearer gain half the experience from a battle, but it ALSO gains EVs. So, for example, if someone battles a Pidgey for one EV of Speed, the both the Pokemon that battled and the wearer of EXP. Share gain 1 EV in Speed EACH. (If, say, a Pidgeotto battles and a Gastly is wearing the EXP. Share, then both Pidgeotto and Gastly each get 1 EV; the amount of EVs gained is not split in half.)

Reducing EVs
In Pokemon Emerald version, there are 6 berries that can reduce EVs. Each one reduces 10 EVs from their respective stat.

- Pomeg Berry - HP
- Kelpsy Berry - Attack
- Qualot Berry - Defense
- Hondew Berry - Special Attack
- Grepa Berry - Special Defense
- Tamato Berry - Speed


If there is already a guide then delete this Please ^.^

Hope it is helpful.

Stickied.

If any other mods disagree, I don't see why.

Yeah, but he still needs to learn how to EV train.... Good Luck 3nodding

Good work, but I think the D/P section needs some work, you should list wild pokemon that give 1 EX in each stat, because people like me, like to EV train from Level 1

Yes this is do-able

question: if a pokemon is holding a power item and another is holding an exp. share and you defeat a golbat, getting you 6 speed evs, does the exp sharer also get 6 evs or does it only get 2?

This is a very useful thread. I am glad it is stickied. I should get back to editing my EV Guide in the other guild I am in xD.