Brave cranks Attack up 10% but lowers Speed. That Speed penalty sounds bad until you realize Trick Room flips the turn order. You'll see it on Ting-Lu, Bronzong, Ursaluna among others.

Brave raises Attack by 10% and lowers Speed by 10%. Trick Room physical attackers that benefit from moving last. 100 Pokemon competitively run this nature.
#PokemonTierRoleAbility+Atk-SpeSpe
1
Ting-Lu
Ting-Lu
DARKGROUND
SPhysical TankVesselofruin
110+16
45-7
45
2
Bronzong
Bronzong
STEELPSYCHIC
APhysical TankLevitate
89+14
33-6
33
3
Ursaluna
Ursaluna
GROUNDNORMAL
APhysical TankGuts
140+19
50-7
50
4
Iron Hands
Iron Hands
FIGHTINGELECTRIC
APhysical TankQuarkdrive
140+19
50-7
50
5
Diancie
Diancie
ROCKFAIRY
APhysical TankClearbody
100+15
50-7
50
6
Conkeldurr
Conkeldurr
FIGHTING
APhysical AttackerIronfist
140+19
45-7
45
7
Rhyperior
Rhyperior
GROUNDROCK
APhysical TankSolidrock
140+19
40-6
40
8
Mimikyu
Mimikyu
GHOSTFAIRY
APhysical TankDisguise
90+14
96-12
96
9
Tsareena
Tsareena
GRASS
APhysical TankQueenlymajesty
120+17
72-10
72
10
Rhydon
Rhydon
GROUNDROCK
APhysical TankLightningrod
130+18
40-6
40
11
Snorlax
Snorlax
NORMAL
ABulky SupportGluttony
110+16
30-5
30
12
Mudsdale
Mudsdale
GROUND
APhysical TankStamina
125+17
35-6
35
13
Dondozo
Dondozo
WATER
APhysical TankUnaware
100+15
35-6
35
14
Regirock
Regirock
ROCK
APhysical TankClearbody
100+15
50-7
50
Ting-Lu
Ting-Lu
DARK GROUND
S
Role
Physical Tank
Ability
Vesselofruin
+Atk
110 +16
Spe
45
Bronzong
Bronzong
STEEL PSYCHIC
A
Role
Physical Tank
Ability
Levitate
+Atk
89 +14
Spe
33
Ursaluna
Ursaluna
GROUND NORMAL
A
Role
Physical Tank
Ability
Guts
+Atk
140 +19
Spe
50
Iron Hands
Iron Hands
FIGHTING ELECTRIC
A
Role
Physical Tank
Ability
Quarkdrive
+Atk
140 +19
Spe
50
Diancie
Diancie
ROCK FAIRY
A
Role
Physical Tank
Ability
Clearbody
+Atk
100 +15
Spe
50
Conkeldurr
Conkeldurr
FIGHTING
A
Role
Physical Attacker
Ability
Ironfist
+Atk
140 +19
Spe
45
Rhyperior
Rhyperior
GROUND ROCK
A
Role
Physical Tank
Ability
Solidrock
+Atk
140 +19
Spe
40
Mimikyu
Mimikyu
GHOST FAIRY
A
Role
Physical Tank
Ability
Disguise
+Atk
90 +14
Spe
96
Tsareena
Tsareena
GRASS
A
Role
Physical Tank
Ability
Queenlymajesty
+Atk
120 +17
Spe
72
Rhydon
Rhydon
GROUND ROCK
A
Role
Physical Tank
Ability
Lightningrod
+Atk
130 +18
Spe
40
Snorlax
Snorlax
NORMAL
A
Role
Bulky Support
Ability
Gluttony
+Atk
110 +16
Spe
30
Mudsdale
Mudsdale
GROUND
A
Role
Physical Tank
Ability
Stamina
+Atk
125 +17
Spe
35
Dondozo
Dondozo
WATER
A
Role
Physical Tank
Ability
Unaware
+Atk
100 +15
Spe
35
Regirock
A
Role
Physical Tank
Ability
Clearbody
+Atk
100 +15
Spe
50
+10%Attack
-10%Speed
Flavor Preference
Likes Spicy, dislikes Sweet
Competitive Role
Trick Room physical attackers that benefit from moving last.
Brave vs Adamant
Choose Brave
+Attack / -Speed
  • Pokemon that benefit from maximizing Attack
  • Builds where the -Speed penalty is irrelevant
Choose Adamant
+Attack / -Sp. Attack
  • Pokemon that need Attack more than Attack
  • Builds where -Speed is too costly
How to Get
SynchronizeLead with a Brave Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Brave nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse a Brave Mint to change stat effects to Brave. The original nature name stays but stats change. (Gen 8+)
Other +Attack Natures
Adamant (-Sp. Attack)Lonely (-Defense)Naughty (-Sp. Defense)
What does the Brave nature do in Pokemon?
Brave gives your Pokemon 10% more Attack at the cost of Speed. That tradeoff works best when the lowered stat isn't part of your moveset. Pokemon with Brave nature prefer Spicy flavor and dislike Sweet.
What are the best Brave nature Pokemon?
Competitively, Ting-Lu, Bronzong, Ursaluna, and Iron Hands run Brave most often. The +Attack boost complements their role, and the -Speed penalty barely affects their game plan.
Is Brave a good nature for competitive Pokemon?
For the right Pokemon, Brave is one of the best natures you can pick. The -Speed drop actually helps under Trick Room, where slower Pokemon move first. Just don't slap it on something that uses Speed-based moves.
How do I get a Brave nature Pokemon?
Breeding with an Everstone is the most reliable approach since Gen 5. The parent holding it passes its nature to every offspring. Synchronize works for wild catches. And if you already have the Pokemon, a Brave Mint from the Battle Tower changes the stat effects to Brave.
Should I use Brave or Adamant?
Short answer: Brave for Trick Room power, Adamant for standard power. There's no universal best. Check your Pokemon's base stats and common threats in the format you're playing to decide which tradeoff is better.