Pokémon/Competitive battling/Abilities

First, please note that Traits only appear in the Third Generation. Each Pokémon has an Trait, or Ability, and they will benefit the Pokémon in one way. Some Pokémon has unique Traits that only that Pokémon can have. Note that these are not moves, but they will activate indefinitely or when an event happened. You do not "use" these Traits, but they are automatic. Right now, it's only important that you know Traits exist and that they are something not to overlook. Below is the list of all the Abilities in alphabetical order and what they do.

1. Adaptability: Doubles the power of a move if it is the same type as the user.
2. Aftermath: When the Pokémon with this ability faints, the HP of the Pokémon that dealt the final blow is reduced by 1/4 its maximum.
3. Air Lock: When a Pokémon with this Trait is active, all effects of the current weather are completely negated.
4. Anger Point: When attacked by a critical hit, increases Attack stat to maximum level.
5. Anticipation: Warns the player when the opponent has 1-hit KO moves or moves that are supereffective against the player's Pokémon.
6. Arena Trap: Pokémon with this Trait prevent any opposing Pokémon from leaving play, except those that are Flying-type or possess the Trait Levitate. When the Pokémon with Arena Trap is in the lead position, increases chance of meeting wild Pokémon in the field.
7. Battle Armor: Pokémon with this Trait have a thick layer of armor that prevents Critical Hits.
8. Blaze: When the HP of a Pokémon with this Trait falls below 1/3 it's total HP, that Pokémon's Fire type attacks will do 1.5x damage.
9. Cacophony: Pokémon with this Trait negate the effects of Sound Moves by drowning them out. This Ability is only available by hacking, and only in the 3rd Generation.
10. Chlorophyll: Pokémon with this Trait absorb sunlight to double their Speed while it is Sunny.
11. Clear Body: Pokémon with this Trait are completely immune to all stat-lowering attacks.
12. Cloud Nine: When a Pokémon with this Trait is active, all effects of the current weather are completely negated.
13. Color Change: When a Pokémon with this Trait is attacked, it will change its type to that of the move it was hit with.
14. Compoundeyes: Increases Accuracy of all attacks by 30%. Increases the chance of meeting wild Pokémon with held items while the Pokémon with this ability is in the lead position.
15. Cute Charm: When a Pokémon with this Trait is attacked with a Direct Attack, there is a 30% chance of the attacker becoming Attracted if the attacker is of the opposite gender. When the Pokémon with this ability is in the team's lead position, the chance of meeting wild Pokémon of the opposite gender increases.
16. Damp: When a Pokémon with this Trait is active, the battle arena becomes so damp that no active Pokémon can use Explosion or Selfdestruct.
17. Drizzle: Pokémon with this Trait cause Rain to fall for the entire time they are in play, as well as five turns after they leave play.
18. Drought: Pokémon with this Trait cause the weather to be Sunny for the remainder of the time they are in battle, as well as five turns after they leave battle.
19. Dry Skin: Restores HP when hit by Water-type moves or when raining; weak against Fire-type moves; lowers HP in strong sunlight.
20. Early Bird: When a Pokémon with this Trait falls asleep, the duration of its sleep will be only half as long as it would have been.
21. Effect Spore: When a Pokémon with this Trait is attacked with a Direct Attack, there is a 10% chance of the attacker becoming either Paralyzed, Poisoned, or Asleep.
22. Filter: Decreases damage taken by supereffective moves.
23. Flame Body: When a Pokémon with this Trait is attacked with a Direct Attack, there is a 30% chance of the attacker becoming Burned. Eggs hatch more quickly when a teammate has this ability.
24. Flash Fire: When a Pokémon with this Trait is attacked with a Fire-type move, no damage is taken, and its own Fire-type moves become 1.5x more powerful.
25. Flower Gift: Multiplies ally Pokémon's Attack and Special Attack by 1.5x during strong sunlight.
26. Forecast: Pokémon with this Trait change their type according to the weather.
27. Forewarn: Learn opponent's strongest move by base power.
28. Frisk: Learn opponent's held item.
29. Gluttony: When HP is low, eats a held berry earlier than normal.
30. Guts: When a Pokémon with this Trait receives a status ailment, its Attack is increased by 1.5x.
31. Heatproof: Halves damage caused by Fire-type attacks and Burns.
32. Honey Gather: May pick up honey after battle; likelihood depends on level.
33. Huge Power: Pokémon with this Trait have double their normal Attack, but the effect is reduced by half is Skill Swap is used.
34. Hustle: Attacks from Pokémon with this Trait do 1.5x more damage, but their accuracy is 20% lower. Increases chance of meeting wild Pokémon of higher level in the field.
35. Hydration: Cures Status Effects when it is raining.
36. Hyper Cutter: Pokémon with this Trait are extremely fierce, and their Attack cannot be lowered.
37. Ice Body: Heals some HP every time it hails.
38. Illuminate: Pokémon with this Trait emit a warm glow that attracts wild Pokémon when the team member with this Ability is in the lead position. It has no effect in battle.
39. Immunity: Pokémon with this move have a natural immunity to all forms of Poison.
40. Inner Focus: Pokémon with this Trait concentrate intensely to prevent Flinching.
41. Insomnia: Pokémon with this Trait are unable to fall Asleep.
42. Intimidate: When Pokémon with this Trait enter play, their presence is so intimidating that any opposing Pokémon has its Attack stat reduced by one level. Decreases the chance of meeting low-level Pokémon when the team member with this ability is in the lead position.
43. Iron Fist: Increases power of punch attacks (Ice Punch, Fire Punch, etc.) by 20%.
44. Keen Eye: Pokémon with this Trait have exceptional vision, and their Accuracy cannot be lowered. Decreases chance of meeting lower-leveled wild Pokémon when the Pokémon with this ability is in the lead position.
45. Klutz: Pokémon with this ability can't use held items except ones that improve stats or affect experience.
46. Leaf Guard: Pokémon with this ability are protected from Status Effects during strong sunlight.
47. Levitate: Pokémon with this Trait can float in the air, thereby avoiding all Ground type attacks.
48. Lightning Rod: When a Pokémon with this Trait is in play, all Electric attacks are drawn to it, regardless of the intended target.
49. Limber: Pokémon with this Trait have extremely flexible bodies that are unable to be Paralyzed.
50. Liquid Ooze: When Pokémon with this Trait are attacked by a HP draining attack, such as Giga Drain, the attacker's HP will drop instead of rise.
51. Magic Guard: Protects all damage except from Direct Attacks.
52. Magma Armor: Pokémon with this Trait are covered in a burning exterior that prevents Freezing. Eggs hatch faster when a Pokémon with Magma Armor is on the team.
53. Magnet Pull: Pokémon with this Trait are magnetically charged and will prevent all Steel type Pokémon from leaving play. Increases chance of meeting wild Steel-type Pokémon when the team member with this ability is in the lead position.
54. Marvel Scale: When a Pokémon with this Trait receives a status ailment, its Defense is increased by 1.5x.
55. Minus: If the Ally of a Pokémon with this Trait has the Trait "Plus", its Special Attack will be 1.5x greater.
56. Mold Breaker: This Pokémon is not affected by the foe's ability during battle.
57. Motor Drive: When a Pokémon with this ability is hit with an Electric-type attack, no damage is received and this Pokémon's Speed raises one level.
58. Natural Cure: Pokémon with this Trait possess the ability to cure themselves of all status abnormalities upon leaving play.
59. No Guard: Both this Pokémon and the foe have 100% accuracy in battle. Increases chance of meeting wild Pokémon in the field when the Pokémon with No Guard is in the lead position.
60. Normalize: Changes the type of all moves in battle, including the opponent's moves, to Normal-type.
61. Oblivious: Pokémon with this Trait are immune to the move Attract.
62. Overgrow: When the HP of a Pokémon with this Trait falls below 1/3 it's total HP, that Pokémon's Grass type attacks will do 1.5x damage.
63. Own Tempo: Pokémon with this Trait have unique minds and cannot become Confused.
64. Pickup: Pokémon with this Trait have a chance to pick up items after battles with wild Pokémon. It has no effect in battle.
65. Plus: If the Ally of a Pokémon with this Trait has the Trait "Minus", its Special Attack will be 1.5x greater.
66. Poison Heal: When a Pokémon with this ability is poisoned, its HP is restored every turn instead of lost.
67. Poison Point: When a Pokémon with this Trait is attacked with a Direct Attack, there is a 30% chance of the attacker becoming Poisoned.
68. Pressure: When a Pokémon with this Trait is attacked, the attacker loses 2 PP from the attack it used. Increases chance of meeting high-level wild Pokémon when the team member with Pressure is in the lead position.
69. Pure Power: Pokémon with this Trait have double their normal Attack, but the effect is halved if Skill Swap is used.
70. Quick Feet: Doubles a Pokémon's Speed if affected by a Status Condition other than Paralysis. If afflicted with Paralysis, Speed is reduced by 1/4 maximum. Decreases chance of meeting wild Pokémon if the team member with this ability is in the lead position.
71. Rain Dish: Pokémon with this Trait use a dish atop their heads to collect rainwater and use it to heal themselves by 1/16 of their total HP each turn it Rains.
72. Reckless: Increases power of moves but causes recoil damage each time a move hits.
73. Rivalry: Increases Attack if opponent has same gender; decreases Attack if opponent has different gender.
74. Rock Head: Pokémon with this Trait have a thick skull that prevents recoil damage from moves such as Double-Edge.
75. Rough Skin: Pokémon with this Trait have extremely coarse skin that damages any Pokémon that uses a Direct Attack against it by 1/16 of their total HP.
76. Run Away: Pokémon with this Trait can flee from wild Pokémon without fail. It has no effect in battle.
77. Sand Stream: Pokémon with this Trait cause a ferocious Sandstorm to rage for the remainder of the battle when they enter play.
78. Sand Veil: Pokémon with this Trait are slightly more evasive during a Sandstorm. In the field, if there is a sandstorm and the Pokémon with this ability is in the lead position, the chance of meeting wild Pokémon is reduced.
79. Scrappy: Makes opponent Ghost-types vulnerable to Normal-type attacks.
80. Serene Grace: When a Pokémon with this Trait uses an attack that has an extra effect, the chances of the effect occurring are doubled.
81. Shadow Tag: Pokémon with this Trait possess the ability to freeze the shadows of opponents and prevent them from leaving play.
82. Shed Skin: When a Pokémon with this Trait has a status ailment, there is a 33% chance each turn of the Pokémon curing the ailment.
83. Shell Armor: Pokémon with this Trait have a thick layer of armor that prevents Critical Hits.
84. Shield Dust: Pokémon with this Trait are coated in a strange powder that the negates the extra effects of most moves.
85. Simple: Doubles the effectiveness of all stat modifications, both good and bad.
86. Skill Link: Always hit 5 times with a move that attacks 2-5 times.
87. Slow Start: Halves Attack and Defense for the first five turns in battle.
88. Sniper: Triples the power of critical hits.
89. Snow Cloak: Pokémon avoid moves more easily during hail. Decreases chance of meeting wild Pokémon in hail when the Pokémon with Snow Cloak is in the team's lead position.
90. Snow Warning: Summons hail when a Pokémon with this ability is sent into battle.
91. Solar Power: Multiplies the Pokémon's Special Attack by 1.5x and decreases HP every turn during strong sunlight.
92. Solid Rock: Pokémon with this ability reduce the damage taken from supereffective moves.
93. Soundproof: Pokémon with this Trait are completely immune to all moves involving sound, such as Grasswhistle, Uproar, Growl, etc.
94. Speed Boost: The Speed of any Pokémon with this Trait rises by one level at the end of every turn.
95. Stall: Pokémon with this Trait always move after the foe.
96. Static: When a Pokémon with this Trait is attacked with a Contact Move, there is a 30% chance of the attacker becoming Paralyzed. Increases chance of meeting wild Electric-type Pokémon when the Pokémon with Static is in the lead position.
97. Steadfast: Raises Speed 1 level each time the Pokémon with this ability flinches.
98. Stench: Pokémon with this Trait posses an unbearable stench that helps keep away wild Pokémon in the field. It has no effect in battle.
99. Sticky Hold: Pokémon with this Trait cannot have their item stolen in any way. When in the lead position, increases chance of catching a wild Pokémon while fishing.
100. Storm Drain: Draws in all Water-type attacks in a two-on-two battle.
101. Sturdy: Pokémon with this Trait are completely immune to all One-Hit KO attacks.
102. Suction Cups: Pokémon with this Trait use suction cups to anchor themselves, negating the effects of Roar and Whirlwind. When in the lead position, increases chance of catching a wild Pokémon while fishing.
103. Super Luck: Increases chance of critical hit; allows use of Dire Hit and Focus Energy at the same time.
104. Swarm: When the HP of a Pokémon with this Trait falls below 1/3 it's total HP, that Pokémon's Bug type attacks will do 1.5x damage. Increases the chance of hearing the Pokémon's cry when in the lead position.
105. Swift Swim: Pokémon with this Trait use their incredible swimming ability to double their Speed while it is Raining.
106. Synchronize: When a Pokémon with this Trait becomes Paralyzed, Poisoned, or Burned, the Pokémon that inflicted it receives the same status as well. When in the lead position, increases chance of meeting wild Pokémon of the same nature.
107. Tangled Feet: This Pokémon's Evasion increases when it is Confused.
108. Technician: Multiplies base power of moves that have a base power of 60 or less by 1.5x.
109. Thick Fat: Pokémon with this Trait receive half damage from Fire type and Ice type attacks.
110. Tinted Lens: Doubles damage of "not very effective" attacks.
111. Torrent: When the HP of a Pokémon with this Trait falls below 1/3 it's total HP, that Pokémon's Water-type attacks will do 1.5x damage.
112. Trace: When a Pokémon with this Trait enters play, it copies the Trait of an opposing Pokémon until it leaves play.
113. Truant: Pokémon with this Trait are extremely lazy, and only attack every other turn.
114. Unaware: This Pokémon is unaffected by the foe's stat modifications.
115. Unburden: Doubles Speed after it consumes a held item.
116. Vital Spirit: Pokémon with this Trait are extremely alert and cannot fall Asleep. When in the lead position, increases chance of meeting wild Pokémon of a higher level.
117. Volt Absorb: When a Pokémon with this Trait is attacked with an Electric-type move, it will absorb the damage and recover a maximum of 1/4 its total HP.
118. Water Absorb: When a Pokémon with this Trait is attacked with a Water-type move, it will absorb the damage and recover a maximum of 1/4 its total HP.
119. Water Veil: Pokémon with this Trait are surrounded by a shield of water that prevents Burns.
120. White Smoke: Pokémon with this Trait are protected by a veil of smoke that negates the effects of all stat-lowering moves. Decreases chance of meeting wild Pokémon when the team member with White Smoke is in the lead position.
121. Wonder Guard: Pokémon with this Trait are protected by a mystical barrier that negates damage from all attacks except those that are supereffective against the Pokémon with Wonder Guard.