Pokémon Abilities (also referred to as "Traits" or "Characteristics") are a new feature that was introduced in the Pokémon Ruby and Sapphire games.

These are not to be confused with personality type ("nature"), which can modify a Pokémon's base statistics, nor with the attack techniques ("moves") a Pokémon can learn. Rather, an Ability can be thought of as an extra, innate trait distinctive of one or more species of Pokémon. For example, the ability Rock Head nullifies the recoil damage from techniques that also damage the user when performed, such as Double Edge and Take Down. Abilities have many diverse effects.

Usually, a single species of Pokémon has only one ability associated with it, but several have two. In the latter case, it appears that one of the two abilities will be randomly assigned upon capture. Many abilities are assigned to certain species of Pokémon according to their Pokédex entries; for example, Grimer and Muk have the Stench ability because they smell absolutely foul, while Meowth has the Pickup ability because it is known to hoard shiny objects.

A list of Pokémon Abilities is as follows:

Contents: Top - 0-9 A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

A

• Air Lock

Effects of the weather (either natural or induced by the moves Rain Dance, Sunny Day, Hail or Sandstorm) do not affect this Pokémon. Any of the weather-changing attacks attempted while this Pokémon is in battle will fail. The abilities Chlorophyll and Swift Swim will not work while this Pokémon is in battle. Compare to Cloud Nine.
Pokémon with this ability:

• Arena Trap

The opposing Pokémon (wild or trained) cannot run from battle nor be switched out. However, Pokémon with the Flying type, the Levitate ability or knowledge of the Baton Pass attack may leave from battle normally. Compare to Magnet Pull, Run Away and Shadow Tag. In Pokémon Emerald, if a Pokémon with Arena Trap is placed first in the trainer's team, the chance of encountering a wild Pokémon while in grass, caves, water etc. is increased to 200%.
The Pokémon with this ability are all Ground type.
Pokémon with this ability:

B

• Battle Armor

The opponent's moves cannot score a Critical Hit on the Pokémon with this ability. Compare to Shell Armor.
The Pokémon with this ability are all resurrected fossils.
Pokémon with this ability:

• Blaze

When the Pokémon's HP is below 1/3rd of its maximum HP, the base damage power of its Fire-elemental attacks increases by 50%. (For example, Fire Blast's power increases from 120 to 180). Compare to Overgrowth, Swarm and Torrent. Essentially, this ability is possessed by the Fire-type Starter Pokémon.
Pokémon with this ability:

C

• Chlorophyll

When the weather is sunny (usually due to the use of the Sunny Day move), the Pokémon's speed stat is doubled. Compare to Swift Swim. As fits for this ability, all Pokémon who have it are Grass type.
Pokémon with this ability:

• Clear Body

The Pokémon is not affected by opponent moves that lower its statistics (such as Leer, Growl or Scary Face). Compare to Hyper Cutter and White Smoke.
Pokémon with this ability:

• Cloud Nine

Effects of the weather (either natural or induced by the moves Rain Dance, Sunny Day, Hail or Sandstorm) do not affect this Pokémon. Any of the weather-changing attacks attempted while this Pokémon is in battle will fail. The abilities Chlorophyll and Swift Swim will not work while this Pokémon is in battle. Compare to Air Lock.
Pokémon with this ability:

• Color Change

Every time the Pokémon is damaged by an attack, it changes its elemental type to the type of that attack. Since most attacks are not very effective against Pokémon of the same type, this ability is aimed for defense. Compare to Forecast.
Pokémon with this ability:

• Compoundeyes

The Pokémon's hidden accuracy stat is raised by 30% in battles. Compare to Keen Eye. All Pokémon with this ability are, naturally, Bug type. In Pokémon Emerald, if a Pokémon with that ability is placed first in the trainers team, the chance of encountering a wild Pokemon holding an item increases.
Pokémon with this ability:

• Cute Charm

If the opponent is the opposite gender of this Pokémon, the opponent has a 30% chance of being induced with the infatuation effect of the Attract move with every direct attack against that Pokémon. While infatuated, there is a 50% chance that the opponent will not attack. Compare to Effect Spore, Flame Body, Poison Point and Static. In Pokémon Emerald, if a Pokémon with Cute Charm is placed first in the trainer's team, the chance of encountering a wild Pokémon of the opposite gender becomes 2/3. All the Pokémon with this ability are Normal type.
Pokémon with this ability:

D

• Damp

No Pokémon in battle can use the moves Explosion or Selfdestruct. As the name suggests, all the Pokémon with this ability are Water type.
Pokémon with this ability:

• Drizzle

When the Pokémon enters battle, rain begins to fall as if the move Rain Dance has been used. Compare to Drought and Sand Stream.
Pokémon with this ability:

• Drought

When the Pokémon enters battle, the sunlight becomes bright as if the move Sunny Day has been used. Compare to Drizzle and Sand Stream.
Pokémon with this ability:

E

• Early Bird

When this Pokémon is put to sleep, it will wake up in half the turns, rounded down (so if it were to sleep one turn, it will wake up immediately). Despite the name of this ability, not only birds have it. Compare to Vital Spirit.
Pokémon with this ability:

• Effect Spore

Every time the opponent attacks this Pokémon directly, there is a 9,8% chance that the opponent will be either paralysed, poisoned or put to sleep. If the opponent is already afflicted with a status ailment, this ability will not have any effect. All the Pokémon with this ability are Grass type. Compare to Cute Charm, Flame Body, Poison Point and Static.
Pokémon with this ability:

F

• Flame Body

Whenever the opponent Pokémon directly attacks this Pokémon, there is a 30% chance that the opponent will be afflicted with the Burn status ailment. This will not work if the opponent is already suffering from another status ailment. Compare to Cute Charm, Effect Spore, Poison Point and Static. All Pokémon with this ability are Fire type. In Pokémon Emerald, having both a Pokémon with this ability and a Pokémon Egg in your team will cause the latter to hatch in half the steps that would normally be required.
Pokémon with this ability:

• Flash Fire

This ability manifests only when the Pokémon is damaged by a Fire-elemental attack or attacked by the Will O' Wisp attack. Once that happens:

• • The base damage power of the Pokémon's Fire elemental attacks increases by 50% and
  • The Pokémon will receive no more damage from Fire-elemental attacks. All Pokémon with this ability are Fire type.
    Pokémon with this ability:

• Forecast

The Pokémon's elemental type and sprite change according to the current weather. Specifically:

Weather move used	Elemental type
None	The Pokémon's usual type
Rain Dance	Water
Sunny Day	Fire
Hail	Ice

Compare to Color Change. Pokémon with this ability:

G

• Guts

When the Pokémon is suffering from a status ailment (poison, sleep, paralysis, frozen, burn) its attack stat will be raised by 50%. Compare to Marvel Scale.
Pokémon with this ability: Rattata, Raticate, Machop, Machoke, Machamp, Heracross, Tyrogue, Ursaring, Larvitar, Swellow, Taillow, Makuhita, Hariyama

H

• Huge Power

When the Pokémon is in battle, its attack statistic is doubled. Compare to Pure Power.
Pokémon with this ability: Marill, Azumarill, Azurill

• Hustle

The Pokémon's attack statistic is increased by 50%, but its hidden Accuracy statistic starts out at 80%. In Pokémon Emerald, if a Pokémon with Hustle is at the front of the trainer's team, the chance of encountering a high-level wild Pokémon decreases.
Pokémon with this ability: Togepi, Togetic, Remoraid, Corsola, Delibird

• Hyper Cutter

The Pokémon's attack statistic cannot be lowered by the opponent's moves (such as Growl or Charm). Compare to Clear Body and White Smoke. In Pokémon Emerald, if a Pokémon with Hyper Cutter uses the HM Cut in the field, more grass will be cut than usual.
Pokémon with this ability: Krabby, Kingler, Pinsir, Gligar, Mawile, Trapinch, Corphish, Crawdaunt

I

• Illuminate

If this Pokémon is at the front of the trainer's team, the chance of encountering a wild Pokémon while in grass, water, caves etc. is doubled. Compare to Stench.
Pokémon with this ability: Staryu, Starmie, Chinchou, Lanturn, Volbeat

• Immunity

The Pokémon cannot be afflicted with the status ailment of poison. This covers both "normal" poison condition and the deteriorating poisoning caused by the Toxic attack. A Poisoned Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured as long as it retains this ability. Compare to Inner Focus, Insomnia, Limber, Magma Armor, Oblivious, Own Tempo, Water Veil and Vital Spirit.
Pokémon with this ability: Snorlax, Zangoose, and probably Munchlax due to Snorlax's having it. Thanks to this ability, Zangoose can be said to have an advantage over its rival species, the Poison type Seviper.

• Inner Focus

The Pokémon will not flinch by moves which have such an effect (such as Bite). This ability does not prevent the "flinching" which occurs if a Pokémon is damaged while charging a Focus Punch attack. Compare to Immunity, Insomnia, Magma Armor, Oblivious, Own Tempo, Water Veil and Vital Spirit.
Pokémon with this ability: Zubat, Golbat, Abra, Kadabra, Alakazam, Farfetch'd, Dragonite, Girafarig, Crobat, Sneasel, Snorunt, Glalie

• Insomnia

The Pokémon cannot be afflicted by the status ailment of sleep. A Sleeping Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured as long as it retains this ability. Compare to Immunity, Inner Focus, Limber, Magma Armor, Oblivious, Own Tempo, Water Veil and Vital Spirit.
Pokémon with this ability: Drowzee, Hypno, Spinarak, Ariados, Hoothoot, Noctowl, Murkrow, Shuppet, Banette

• Intimidate

When this Pokémon enters battle, the opponent's attack statistic is lowered by one stage. Exactly how much the statistic is reduced depends on whether it has been lowered or raised before, but if used on a Pokémon whose attack has not been modified in any other way, it will reduce it to 2/3 of its value. In Pokémon Emerald, if a Pokémon with Intimidate is placed first in the trainer's team, the chance of encountering wild Pokémon whose level is up to five levels lower than that Pokémon's level is halved.
Pokémon with this ability: Ekans, Arbok, Growlithe, Arcanine, Gyarados, Tauros, Snubbull, Granbull, Stantler, Hitmontop, Mightyena, Mawile, Masquerain, Salamence

K

• Keen Eye

The Pokémon's accuracy stat cannot be lowered by the opponent's moves (like Sand Attack or Mud Slap). Compare to Compoundeyes. In Pokémon Emerald, if a Pokémon with Keen Eye is placed first in the trainer's team, the chance of encoutnering a low level wild Pokémon decreases.
Pokémon with this ability: Pidgey, Pidgeotto, Pidgeot, Spearow, Fearow, Farfetch'd, Hitmonchan, Sentret, Furret, Hoothoot, Noctowl, Skarmory, Sneasel, Wingull, Pelipper, Sableye

L

• Levitate

The Pokémon will not receive damage from Ground-elemental attacks, as if one of its elemental types was Flying but without the rest of that type's weaknesses and resistances. It will also not be affected by the Arena Trap ability, nor receive damage from the Spikes attack when it enters or leaves battle. Compare to Thick Fat and Wonder Guard.
Pokémon with this ability: Gastly, Haunter, Gengar, Koffing, Weezing, Unown, Misdreavus, Baltoy, Claydol, Chimecho, Duskull, Lunatone, Solrock, Vibrava, Flygon, Latias, Latios. Many of these Pokémon have elemental types which are weak to Ground elemental attacks, so this ability can be a powerful asset, especially against a less knowledgeable or forgetful opponent.

• Lightningrod

In 2 vs. 2 battles, all Electric elemental attacks by the opponents will always hit this Pokémon, regardless of the target chosen by the opponent. In Pokémon Emerald, having this Pokemon in your team will increase the calls you get in your Match Call.
Pokémon with this ability: Cubone, Marowak, Rhyhorn, Rhydon, Electrike, Manectric. These Pokémon are either immune or resistant to Electric attacks, so this ability can come in handy when battling together with a Pokemon that is weak against them.

• Limber

The Pokémon cannot be afflicted with the status ailment of paralysis. A Paralysed Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured as long as it retains this ability. Compare to Inner Focus, Insomnia, Immunity, Magma Armor, Oblivious, Own Tempo, Water Veil and Vital Spirit. As this move is only present in FireRed and LeafGreen Pokémon, it can be assumed that NOA added this ability for those games.
Pokémon with this ability: Persian, Hitmonlee, Ditto

• Liquid Ooze

When this Pokémon is damaged by an opponent move that involves the opponent gaining an amount HP proportional to the damage dealt (such as Leech Life, Mega Drain or Dream Eater), the opponent instead loses that amount of HP.
Pokémon with this ability: Tentacool, Tentacruel, Gulpin, Swalot

M

• Magma Armor

The Pokémon cannot be afflicted by the status ailment of freezing. A Frozen Pokémon acquiring this ability through use of mimicking techniques such as Trace will be cured as long as it retains this ability. Compare to Inner Focus, Insomnia, Immunity, Limber, Oblivious, Own Tempo, Water Veil and Vital Spirit. All Pokémon with this ability are Fire type. In Pokemon Emerald, having this Pokémon together with a Pokémon Egg in your team will hatch the latter in half the steps normally required.
Pokémon with this ability: Slugma, Magcargo, Camerupt

• Magnet Pull

Steel type wild or trained Pokémon cannot run or be switched out of battle unless they employ the Baton Pass attack. Compare to Arena Trap and Shadow Tag. In Pokémon Emerald, having a Pokemon with Magnet Pull first in the trainer's team will make an encounter with a wild Steel type Pokémon (assuming that there are any at all in the area) 50% more likely.
Pokémon with this ability: Magnemite, Magneton, Nosepass

• Marvel Scale

When the Pokémon is afflicted with a status ailment, its defence statistic rises by 50% its current value (it is multiplied by 1.5). Compare to Guts.
Pokémon with this ability: Milotic

• Minus

When this Pokémon is battling together with a Pokémon with the Plus ability in a 2 vs. 2 battle, its Special Attack statistic is increased by 50% its current value (it is multiplied by 1.5). Compare to Plus.
Pokémon with this ability: Minun...who else?

N

• Natural Cure

When the Pokémon leaves battle for any reason, it is healed of any status ailments it may have. Compare to Shed Skin.
Pokémon with this ability: Chansey, Staryu, Starmie, Corsola, Blissey, Celebi Roselia, Swablu, Altaria

O

• Oblivious

The Pokémon cannot be affected by the infatuation effect of the move Attract. An infatuated Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured. Compare to Immunity, Inner Focus, Insomnia, Limber, Magma Armor, Own Tempo, Water Veil and Vital Spirit.
Pokémon with this ability: Slowpoke, Slowbro, Lickitung, Jynx, Slowking, Swinub, Piloswine, Smoochum, Illumise, Numel, Wailmer, Wailord, Barboach, Whiscash

• Overgrow

When the Pokémon's HP is below 1/3rd of its maximum HP, the base damage power of its Grass-elemental attacks increases by 50%. (For example, Solar Beam's power increases from 120 to 180). Compare to Blaze, Swarm and Torrent. Essentially, this ability is possessed by the Grass type Starter Pokémon.
Pokémon with this ability: Bulbasaur, Ivysaur, Venusaur, Chikorita, Bayleef, Meganium, Treecko, Grovyle, Sceptile

• Own Tempo

The Pokémon cannot be afflicted with the status ailment of confusion. A Confused Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured. Compare to Immunity, Inner Focus, Insomnia, Limber, Magma Armor, Oblivious, Water Veil and Vital Spirit.
Pokémon with this ability: Slowpoke, Slowbro, Lickitung, Slowking, Smeargle, Spinda, Spoink, Grumpig

P

• Pickup

If the Pokémon does not already hold an item, there is a chance after each battle that it will be found holding an item. This will work even if the Pokémon did not actually participate in the battle itself. The nature of the items and the probability of each turning up differ between games. For a detailed list of that information, visit this page (http://pokefor.greenchu.de/meowth346/gba/characteristicdata/).
Pokémon with this ability: Meowth, Phanpy, Aipom, Teddiursa, Zigzagoon, Linoone

• Plus

When this Pokémon is battling together with a Pokémon that has the Minus ability in a 2 vs. 2 battle, its special attack statistic will be increased by 50% its current value (it will be multiplied by 1.5). Compare to Minus.
Pokémon with this ability: Plusle...who else could it be?

• Poison Point

Whenever the opponent Pokémon directly attacks this Pokémon, there is a 30% chance that the opponent will be afflicted with the Poison status ailment. This will not work if the opponent is already suffering from another status ailment. Compare to Cute Charm, Effect Spore, Flame Body, Static.
Pokémon with this ability: Nidoran (female), Nidorina, Nidoqueen, Nidoran (male), Nidorino, Nidoking, Seadra, Qwilfish, Roselia

• Pressure

Whenever an opponent Pokémon uses an attack against this Pokémon, that attack's Power Points (or PP) will be decreased by 2 rather than 1. This ability will work regardless of whether the attack will hit, miss, or affect the Pokémon at all. Pressure's effect is cumulative in 2 vs. 2 battles if multiple Pokémon with the same ability are targeted by the same attack (like Surf or Earthquake).
Pokémon with this ability: Aerodactyl, Articuno, Zapdos, Moltres, Mewtwo, Raikou, Entei, Suicune, Lugia, Ho-Oh, Dusclops, Absol, Deoxys, Rukario. This ability is mostly found in Legendary Pokémon, making their capture all the more difficult.

• Pure Power

When the Pokémon is in battle, its Attack statistic will be doubled. Compare to Huge Power.
Pokémon with this ability: Meditite, Medicham

R

• Rain Dish

As long as the weather is rainy (usually due to the use of the Rain Dance move), the Pokémon will recover 1/16th of its max HP every turn.
Pokémon with this ability: Lombre, Lotad, Ludicolo

• Rock Head

The Pokémon does not receive the recoil damage it would normally deal to itself when using moves like Double-Edge or Take Down.
Pokémon with this ability: Geodude, Graveler, Golem, Onix, Cubone, Marowak, Rhyhorn, Rhydon, Aerodactyl, Sudowoodo, Steelix, Aron, Lairon, Aggron, Relicanth, Bagon, Shelgon

• Rough Skin

Whenever an opponent Pokémon directly attacks this Pokémon, the opponent Pokémon will deal to itself recoil damage equal to 1/16th of its maximum HP.
Pokémon with this ability: Carvanha, Sharpedo

• Run Away

The Pokémon will always be able to escape from battle unless it is a battle with another Pokémon Trainer or under the effects of Block, Mean Look, Arena Trap, or Shadow Tag.
Pokémon with this ability: Rattata, Raticate, Ponyta, Rapidash, Doduo, Dodrio, Eevee, Sentret, Furret, Aipom, Snubbull, Dunsparce, Poochyena

S

• Sand Stream

When this Pokémon enters battle, a sandstorm will begin, as if it used the Sandstorm move. Compare to Drizzle and Drought.
Pokémon with this ability: Tyranitar

• Sand Veil

If there is a sandstorm (usually due to a Pokémon using the attack of the same name) this Pokémon's hidden Evasion statistic will be increased. In Pokémon Emerald, if a Pokémon with this ability is put first in the trainer's party, the chance of encountering a wild Pokémon while travelling in a sandstorm (like the Desert from Pokémon Ruby and Pokémon Sapphire) will decrease to 50%.
Pokémon with this ability: Sandshrew, Sandslash, Diglett, Dugtrio, Gligar, Cacnea, Cacturne

• Serene Grace

The probability of an attack's additional effect happening are doubled. For example, Poison Sting will have a 20% chance to inflict the opponent with Poison and Octazooka will always lower the opponent's Accuracy. Compare to Shield Dust.
Pokémon with this ability: Chansey, Togepi, Togetic, Blissey, Dunsparce (a rather counter-intuitive ability), Jirachi

• Shadow Tag

The opponent Pokémon cannot run or be switched out of battle unless it employs the Baton Pass attack. Compare to Arena Trap and Magnet Pull.
Pokémon with this ability: Wobbuffet, Wynaut

• Shed Skin

If the Pokémon is afflicted with a status ailment, it has a 33,3% chance each turn of recovering from it. Compare to Natural Cure.
Pokémon with this ability: Metapod, Kakuna, Ekans, Arbok, Dratini, Dragonair, Pupitar, Silcoon, Cascoon, Seviper

• Shell Armor

The opponent's moves cannot score a Critical Hit on a Pokémon with this ability. Compare to Battle Armor.
Pokémon with this ability: Shellder, Cloyster, Krabby, Kingler, Lapras, Omanyte, Omastar, Clamperl, Corphish, Crawdaunt

• Shield Dust

The opponent's damaging moves will not have an additional effect. Psychic will never lower the Special Defence statistic, for example, and Sacred Fire will not inflict a burn. Compare to Serene Grace.
Pokémon with this ability: Caterpie, Weedle, Venomoth, Wurmple, Dustox

• Soundproof

The Pokémon is unaffacted by all attacks which are based on loud sounds and noises. These attacks are: Grasswhistle, Growl, Heal Bell, Hyper Voice, Metal Sound, Perish Song, Roar, Screech, Sing, Snore, Supersonic and Uproar.
Pokémon with this ability: Voltorb, Electorde, Mr. Mime, Whismur, Loudred, Exploud

• Speed Boost

Every turn this Pokémon is in battle after the first, its speed statistic will increase one "stage" or 50% its initial value. The ability will not work once the Pokémon's speed statistic has been raised six stages (4 times its initial value) through any combination of means.
Pokémon with this ability: Yanma, Ninjask

• Static

Whenever the opponent Pokémon directly attacks this Pokémon, there is a 30% chance that the opponent will be afflicted with the Paralysis status ailment. This will not work if the opponent is already suffering from another status ailment. Compare to Cute Charm, Effect Spore, Flame Body and Poison Point. This ability is possessed only by Electric type Pokémon. In Pokémon Emerald, if a Pokémon with Static is put first in the trainer's team, the probability of encountering wild Electric type Pokémon in an area (provided there are any to be found) is increased by 150%.
Pokémon with this ability: Pikachu, Raichu, Voltorb, Electrode, Electabuzz, Pichu, Mareep, Flaaffy, Ampharos, Elekid, Electrike, Manectric

• Stench

If the Pokémon is put first in the trainer's team, the chance of encountering a wild Pokémon in grass, caves, water etc. is halved. Compare to Illuminate.
Pokémon with this ability: Grimer, Muk

• Sticky Hold

The Pokémon's held item cannot by taken or removed by the opponent. In Pokémon Emerald, having this Pokémon while fishing with a rod makes hooked Pokémon easier to capture.
Pokémon with this ability: Grimer, Muk, Gulpin, Swalot

• Sturdy

The One-Hit Knock-Out moves Fissure, Guillotine, Horn Drill and Sheer Cold will never work against this Pokémon.
Pokémon with this ability: Geodude, Graveler, Golem, Magnemite, Magneton, Onix, Sudowoodo, Donphan, Steelix, Shuckle, Skarmory, Pineco, Forretress, Nosepass, Aron, Lairon, Aggron

• Suction Cups

The Pokémon cannot be forced out of battle by the attacks Roar and Whirlwind. In Pokémon Emerald, having this Pokémon in your team while fishing with a rod will make the hooked Pokémon easier to catch.
Pokémon with this ability: Octillery, Lileep, Cradily

• Swarm

When the Pokémon's HP is below 1/3rd of its maximum HP, the base damage power of its Bug-elemental attacks increases by 50%. (For example, Mega Horn's power increases from 120 to 180). This ability is possessed only by Bug type Pokémon. In Pokémon Emerald, having a Pokémon with Swarm in your team will cause you to hear the roar of wild Pokémon more often while travelling. For now, this seems to have no practical use. Compare to Blaze, Overgrowth and Torrent.
Pokémon with this ability: Beedrill, Scyther, Ledyba, Ledian, Spinarak, Ariados, Scizor, Heracross, Volbeat, Beautifly

• Swift Swim

When the weather is rainy (usually due to a Pokémon using the Rain Dance move) the Pokémon's Speed statistic is doubled. Compare to Chlorophyll. Only Water type Pokémon have this ability.
Pokémon with this ability: Horsea, Goldeen, Seaking, Magikarp, Omanyte, Omastar, Kabuto, Kabutops, Kingdra, Mantine, Qwilfish, Lotad, Lombre, Ludicolo, Luvdisc, Surskit, Relicanth, Huntail, Gorebyss, Feebas

• Synchronize

If this Pokémon becomes afflicted with either Burn, Paralysis or Poison, the opponent Pokémon will also be afflicted with the corresponding status ailment unless it is immune to it because of its elemental type or ability. In Pokémon Emerald, having a Pokémon with Synchronize first on your team increases the chance of encountering a wild Pokémon whose nature is the same as the nature of that Pokémon by 50%.
Pokémon with this ability: Abra, Kadabra, Alakazam, Mew, Natu, Xatu, Espeon, Umbreon, Ralts, Kirlia, Gardevoir

T

• Thick Fat

Damage done to this Pokémon by Fire and Ice elemental attacks (after considering possible weakness or resistance of the Pokémon to these types) is halved. Compare to Levitate and Wonder Guard.
Pokémon with this ability: Seel, Dewgong, Snorlax, Marill, Azumarill, Miltank, Azurill, Spoink, Grumpig, Spheal, Sealeo, Walrein, Makuhita, Hariyama, and probably Munchlax

• Torrent

When the Pokémon's HP is below 1/3rd of its maximum HP, the base damage power of its Water-elemental attacks increases by 50%. (For example, Hydro Pump's power increases from 120 to 180). Compare to Blaze, Overgrowth and Swarm. Essentially, this ability is possessed by the Water type Starter Pokémon.
Pokémon with this ability: Squirtle, Wartortle, Blastoise, Totodile, Croconaw, Feraligatr, Mudkip, Swampert, Marshtomp

• Trace

The Pokémon copies the opponent's ability as long as it remains in battle. In a 2 vs. 2 battle, the opponent Pokémon whose ability will be copied is chosen at random, though the target is usually the Pokémon opposite the Pokémon w/Trace.
Pokémon with this ability: Porygon, Porygon2, Ralts, Kirlia, Gardevoir

• Truant

The Pokémon can only attack every other turn (i.e. every two turns).
Pokémon with this ability: Slakoth, Slaking. This ability is actually a hindrance. It exists to equalize Slaking's tremendous advantage of having by far the highest Attack statistic in the game. This disadvantage may be dealt with through the use of the Skill Swap attack technique, which swaps the combatants' Abilities.

V

• Vital Spirit

This Pokémon cannot be inflicted with the status ailment of sleep. A Sleeping Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured as long as it retains this ability. Compare to Immunity, Inner Focus, Insomnia, Limber, Magma Armor, Oblivious, Own Tempo and Water Veil. In Pokémon Emerald, putting this Pokémon in the first place of your team halves the chance of encountering a wild Pokémon whose level is higher than the level of this Pokémon.
Pokémon with this ability: Mankey, Primeape, Delibird, Vigoroth

• Volt Absorb

If the Pokémon receives damage from an Electric type attack, it will instead be healed by an amount of HP equal to the damage dealt, but no more than 1/4 of its maximum HP. Compare to Water Absorb.
Pokémon with this ability: Jolteon, Chinchou, Lanturn

W

• Water Absorb

If the Pokémon receives damage from a Water type attack, it will instead be healed by an amount of HP equal to the damage dealt, but no more than 1/4 of its maximum HP. Compare to Volt Absorb.
Pokémon with this ability: Poliwag, Poliwhirl, Poliwrath, Lapras, Vaporeon, Politoed, Mantine, Wooper, Quagsire

• Water Veil

This Pokémon cannot be inflicted with the status ailment of burn. A Burned Pokémon acquiring this ability through use of mimicking techniques such as Skill Swap and Trace will be cured as long as it retains this ability. Compare to Immunity, Inner Focus, Insomnia, Limber, Magma Armor, Oblivious, Own Tempo and Vital Spirit.
Pokémon with this ability: Goldeen, Seaking, Wailmer, Wailord

• White Smoke

The opponent's moves that lower statistics (like Growl, Leer or Scary Face) have no effect. Compare to Clear Body and Hyper Cutter. In Pokémon Emerald, if a Pokémon with White Smoke is put first in the trainer's team, the chance of encountering a wild Pokémon is halved.
Pokémon with this ability: Torkoal

• Wonder Guard

The Pokémon only receives damage from attacks which are super effective against its type(s). Compare to Levitate and Thick Fat.
Pokémon with this ability: Shedinja. Since Shedinja is a Bug/Ghost Pokémon, it can only receive damage from Fire, Flying, Rock, Ghost and Dark attacks.