Special walls run Calm to tank hits from special attackers. 10% extra Sp. Defense, 10% less Attack. If your wall's moves are all status or special, that's a clean trade. For FireRed & LeafGreen, Clefable, Torkoal, Mew, and others all run Calm in competitive play. Synchronize is your best bet for Calm in FireRed & LeafGreen. Lead with a Synchronize Pokemon that already has it.
Calm raises Sp. Defense by 10% and lowers Attack by 10%. Special walls and support Pokemon that use special moves. 100 Pokemon competitively run this nature.
SHOWINGRegional36
| # | Pokemon | Tier | Role | Ability | +SpD | -Atk | Spe |
|---|---|---|---|---|---|---|---|
| 1 | Clefable FAIRY | A | Bulky Support | Magic Guard | 90+14 | 70-9 | 60 |
| 2 | Torkoal FIRE | A | Bulky Support | Drought | 70+12 | 85-11 | 20 |
| 3 | Mew PSYCHIC | A | Bulky Support | Synchronize | 100+15 | 100-12 | 100 |
| 4 | Milotic WATER | A | Bulky Support | Marvelscale | 125+17 | 60-8 | 81 |
| 5 | Jirachi STEELPSYCHIC | A | Bulky Support | Serenegrace | 100+15 | 100-12 | 100 |
| 6 | Slowbro WATERPSYCHIC | A | Bulky Support | Regenerator | 80+13 | 75-10 | 30 |
| 7 | Politoed WATER | B | Bulky Support | Drizzle | 100+15 | 75-10 | 70 |
| 8 | Umbreon DARK | B | Bulky Support | Synchronize | 130+18 | 65-9 | 65 |
| 9 | Zapdos ELECTRIC | B | Bulky Support | Static | 90+14 | 90-11 | 100 |
| 10 | Murkrow DARK | B | Bulky Support | Prankster | 42+9 | 85-11 | 91 |
| 11 | Lanturn WATERELECTRIC | B | Bulky Support | Voltabsorb | 76+12 | 58-8 | 67 |
| 12 | Articuno ICE | B | Bulky Support | Pressure | 125+17 | 85-11 | 85 |
| 13 | Slowking WATERPSYCHIC | B | Bulky Support | Regenerator | 110+16 | 75-10 | 30 |
| 14 | Blissey NORMAL | B | Bulky Support | Natural Cure | 135+18 | 10-3 | 55 |
| 15 | Gardevoir PSYCHICFAIRY | B | Special Tank | Synchronize | 115+16 | 65-9 | 80 |
| 16 | Shuckle BUGROCK | B | Bulky Support | Sturdy | 230+28 | 10-3 | 5 |
| 17 | Tentacruel WATERPOISON | B | Bulky Support | Liquidooze | 120+17 | 70-9 | 100 |
| 18 | Regice ICE | B | Bulky Support | Clearbody | 200+25 | 50-7 | 50 |
| 19 | Dusclops GHOST | B | Bulky Support | Frisk | 130+18 | 70-9 | 25 |
| 20 | Vaporeon WATER | B | Bulky Support | Waterabsorb | 95+14 | 65-9 | 65 |
| 21 | Porygon2 NORMAL | B | Bulky Support | Download | 95+14 | 80-10 | 60 |
| 22 | Altaria DRAGON | B | Bulky Support | Natural Cure | 105+15 | 70-9 | 80 |
| 23 | Weezing POISON | B | Bulky Support | Neutralizinggas | 70+12 | 90-11 | 60 |
| 24 | Chansey NORMAL | B | Bulky Support | Natural Cure | 105+15 | 5-3 | 50 |
| 25 | Lapras WATERICE | B | Bulky Support | Waterabsorb | 95+14 | 85-11 | 60 |
| 26 | Chinchou WATERELECTRIC | B | Bulky Support | Voltabsorb | 56+10 | 38-6 | 67 |
| 27 | Vileplume GRASSPOISON | B | Bulky Support | Effect Spore | 90+14 | 80-10 | 50 |
| 28 | Venusaur GRASSPOISON | B | Bulky Support | Overgrow | 100+15 | 82-11 | 80 |
| 29 | Quagsire WATERGROUND | B | Bulky Support | Unaware | 65+11 | 85-11 | 35 |
| 30 | Latias DRAGONPSYCHIC | B | Bulky Support | Levitate | 130+18 | 80-10 | 110 |
| 31 | Registeel STEEL | B | Bulky Support | Clearbody | 150+20 | 75-10 | 50 |
| 32 | Haunter GHOSTPOISON | B | Bulky Support | Levitate | 55+10 | 50-7 | 95 |
| 33 | Koffing POISON | B | Bulky Support | Neutralizinggas | 45+9 | 65-9 | 35 |
| 34 | Clefairy FAIRY | C | Bulky Support | Friendguard | 65+11 | 45-7 | 35 |
| 35 | Celebi PSYCHICGRASS | C | Bulky Support | Natural Cure | 100+15 | 100-12 | 100 |
| 36 | Camerupt FIREGROUND | C | Bulky Support | Solidrock | 75+12 | 100-12 | 40 |
| 37 | Sableye DARKGHOST | C | Bulky Support | Prankster | 65+11 | 75-10 | 50 |
| 38 | Wigglytuff NORMALFAIRY | C | Bulky Support | Competitive | 50+10 | 70-9 | 45 |
| 39 | Blastoise WATER | C | Bulky Support | Raindish | 105+15 | 83-11 | 78 |
| 40 | Masquerain BUG | C | Bulky Support | Intimidate | 82+13 | 60-8 | 80 |
| 41 | Chimecho PSYCHIC | C | Bulky Support | Levitate | 90+14 | 50-7 | 65 |
| 42 | Cradily ROCKGRASS | C | Bulky Support | Stormdrain | 107+15 | 81-11 | 43 |
| 43 | Mantine WATER | C | Bulky Support | Waterabsorb | 140+19 | 40-6 | 70 |
| 44 | Bellossom GRASS | C | Bulky Support | Chlorophyll | 100+15 | 80-10 | 50 |
| 45 | Togetic FAIRY | C | Bulky Support | Superluck | 105+15 | 40-6 | 40 |
| 46 | Meganium GRASS | C | Bulky Support | Overgrow | 100+15 | 82-11 | 80 |
| 47 | Misdreavus GHOST | C | Bulky Support | Levitate | 85+13 | 60-8 | 85 |
| 48 | Tropius GRASS | C | Bulky Support | Harvest | 87+13 | 68-9 | 51 |
| 49 | Magmar FIRE | C | Bulky Support | Flame Body | 85+13 | 95-12 | 93 |
| 50 | Mr. Mime PSYCHICFAIRY | C | Special Tank | Technician | 120+17 | 45-7 | 90 |
| 51 | Illumise BUG | C | Bulky Support | Prankster | 85+13 | 47-7 | 85 |
| 52 | Exeggutor GRASSPSYCHIC | C | Special Tank | Harvest | 75+12 | 95-12 | 55 |
| 53 | Noctowl NORMAL | C | Bulky Support | Tintedlens | 96+14 | 50-7 | 70 |
| 54 | Glalie ICE | C | Bulky Support | Moody | 80+13 | 80-10 | 80 |
| 55 | Wobbuffet PSYCHIC | C | Bulky Support | Shadowtag | 58+11 | 33-6 | 33 |
| 56 | Volbeat BUG | C | Bulky Support | Prankster | 85+13 | 73-10 | 85 |
| 57 | Wailord WATER | C | Bulky Support | Pressure | 45+9 | 90-11 | 60 |
| 58 | Gloom GRASSPOISON | C | Bulky Support | Stench | 75+12 | 65-9 | 40 |
| 59 | Roselia GRASSPOISON | C | Bulky Support | Natural Cure | 80+13 | 60-8 | 65 |
| 60 | Claydol GROUNDPSYCHIC | C | Bulky Support | Levitate | 120+17 | 70-9 | 75 |
| 61 | Walrein ICEWATER | C | Bulky Support | Icebody | 90+14 | 80-10 | 65 |
| 62 | Swalot POISON | C | Bulky Support | Stickyhold | 83+13 | 73-10 | 55 |
| 63 | Dewgong WATERICE | C | Bulky Support | Hydration | 95+14 | 70-9 | 70 |
| 64 | Golduck WATER | C | Utility | Cloudnine | 80+13 | 82-11 | 85 |
| 65 | Ampharos ELECTRIC | C | Bulky Support | Static | 90+14 | 75-10 | 55 |
| 66 | Magcargo FIREROCK | C | Bulky Support | Flame Body | 80+13 | 50-7 | 30 |
| 67 | Gorebyss WATER | C | Bulky Support | Swiftswim | 75+12 | 84-11 | 52 |
| 68 | Venomoth BUGPOISON | C | Bulky Support | Shielddust | 75+12 | 65-9 | 90 |
| 69 | Numel FIREGROUND | C | Bulky Support | Simple | 45+9 | 60-8 | 35 |
| 70 | Seaking WATER | C | Bulky Support | Lightningrod | 80+13 | 92-12 | 68 |
| 71 | Lileep ROCKGRASS | C | Bulky Support | Stormdrain | 87+13 | 41-7 | 23 |
| 72 | Tangela GRASS | C | Bulky Support | Leafguard | 40+9 | 55-8 | 60 |
| 73 | Sunflora GRASS | C | Special Tank | Chlorophyll | 85+13 | 75-10 | 30 |
| 74 | Bulbasaur GRASSPOISON | C | Bulky Support | Overgrow | 65+11 | 49-7 | 45 |
| 75 | Jigglypuff NORMALFAIRY | C | Bulky Support | Cutecharm | 25+7 | 45-7 | 20 |
| 76 | Combusken FIREFIGHTING | C | Bulky Support | Speed Boost | 60+11 | 85-11 | 55 |
| 77 | Minun ELECTRIC | C | Bulky Support | Minus | 85+13 | 40-6 | 95 |
| 78 | Corsola WATERROCK | C | Bulky Support | Regenerator | 95+14 | 55-8 | 35 |
| 79 | Tentacool WATERPOISON | C | Bulky Support | Clearbody | 100+15 | 40-6 | 70 |
| 80 | Duskull GHOST | C | Bulky Support | Levitate | 90+14 | 40-6 | 25 |
| 81 | Hypno PSYCHIC | C | Bulky Support | Insomnia | 115+16 | 73-10 | 67 |
| 82 | Dragonair DRAGON | C | Bulky Support | Shedskin | 70+12 | 84-11 | 70 |
| 83 | Porygon NORMAL | C | Bulky Support | Download | 75+12 | 60-8 | 40 |
| 84 | Ledian BUG | C | Bulky Support | Swarm | 110+16 | 35-6 | 85 |
| 85 | Azurill NORMALFAIRY | C | Bulky Support | Huge Power | 40+9 | 20-4 | 20 |
| 86 | Stantler NORMAL | C | Bulky Support | Intimidate | 65+11 | 95-12 | 85 |
| 87 | Solrock ROCKPSYCHIC | C | Bulky Support | Levitate | 65+11 | 95-12 | 70 |
| 88 | Venonat BUGPOISON | D | Bulky Support | Compoundeyes | 55+10 | 55-8 | 45 |
| 89 | Seel WATER | D | Utility | Icebody | 70+12 | 45-7 | 45 |
| 90 | Igglybuff NORMALFAIRY | D | Bulky Support | Friendguard | 20+7 | 30-5 | 15 |
| 91 | Eevee NORMAL | D | Bulky Support | Adaptability | 65+11 | 55-8 | 55 |
| 92 | Vulpix FIRE | D | Bulky Support | Drought | 65+11 | 41-7 | 65 |
| 93 | Kirlia PSYCHICFAIRY | D | Bulky Support | Trace | 55+10 | 35-6 | 50 |
| 94 | Baltoy GROUNDPSYCHIC | D | Bulky Support | Levitate | 70+12 | 40-6 | 55 |
| 95 | Gulpin POISON | D | Bulky Support | Stickyhold | 53+10 | 43-7 | 40 |
| 96 | Wynaut PSYCHIC | D | Bulky Support | Shadowtag | 48+10 | 23-5 | 23 |
| 97 | Dustox BUGPOISON | D | Bulky Support | Shielddust | 90+14 | 50-7 | 65 |
| 98 | Larvitar ROCKGROUND | D | Bulky Support | Guts | 50+10 | 64-9 | 41 |
| 99 | Bayleef GRASS | D | Bulky Support | Overgrow | 80+13 | 62-9 | 60 |
| 100 | Cleffa FAIRY | D | Bulky Support | Friendguard | 55+10 | 25-5 | 15 |
Clefable
FAIRY
Role
Bulky SupportAbility
Magic Guard+SpD
90 +14Spe
60Torkoal
FIRE
Role
Bulky SupportAbility
Drought+SpD
70 +12Spe
20Mew
PSYCHIC
Role
Bulky SupportAbility
Synchronize+SpD
100 +15Spe
100Milotic
WATER
Role
Bulky SupportAbility
Marvelscale+SpD
125 +17Spe
81Jirachi
STEEL PSYCHIC
Role
Bulky SupportAbility
Serenegrace+SpD
100 +15Spe
100Slowbro
WATER PSYCHIC
Role
Bulky SupportAbility
Regenerator+SpD
80 +13Spe
30Politoed
WATER
Role
Bulky SupportAbility
Drizzle+SpD
100 +15Spe
70Umbreon
DARK
Role
Bulky SupportAbility
Synchronize+SpD
130 +18Spe
65Zapdos
ELECTRIC
Role
Bulky SupportAbility
Static+SpD
90 +14Spe
100Murkrow
DARK
Role
Bulky SupportAbility
Prankster+SpD
42 +9Spe
91Lanturn
WATER ELECTRIC
Role
Bulky SupportAbility
Voltabsorb+SpD
76 +12Spe
67Articuno
ICE
Role
Bulky SupportAbility
Pressure+SpD
125 +17Spe
85Slowking
WATER PSYCHIC
Role
Bulky SupportAbility
Regenerator+SpD
110 +16Spe
30Blissey
NORMAL
Role
Bulky SupportAbility
Natural Cure+SpD
135 +18Spe
55Gardevoir
PSYCHIC FAIRY
Role
Special TankAbility
Synchronize+SpD
115 +16Spe
80Shuckle
BUG ROCK
Role
Bulky SupportAbility
Sturdy+SpD
230 +28Spe
5Tentacruel
WATER POISON
Role
Bulky SupportAbility
Liquidooze+SpD
120 +17Spe
100Regice
ICE
Role
Bulky SupportAbility
Clearbody+SpD
200 +25Spe
50Dusclops
GHOST
Role
Bulky SupportAbility
Frisk+SpD
130 +18Spe
25Vaporeon
WATER
Role
Bulky SupportAbility
Waterabsorb+SpD
95 +14Spe
65Porygon2
NORMAL
Role
Bulky SupportAbility
Download+SpD
95 +14Spe
60Altaria
DRAGON
Role
Bulky SupportAbility
Natural Cure+SpD
105 +15Spe
80Weezing
POISON
Role
Bulky SupportAbility
Neutralizinggas+SpD
70 +12Spe
60Chansey
NORMAL
Role
Bulky SupportAbility
Natural Cure+SpD
105 +15Spe
50Lapras
WATER ICE
Role
Bulky SupportAbility
Waterabsorb+SpD
95 +14Spe
60Chinchou
WATER ELECTRIC
Role
Bulky SupportAbility
Voltabsorb+SpD
56 +10Spe
67Vileplume
GRASS POISON
Role
Bulky SupportAbility
Effect Spore+SpD
90 +14Spe
50Venusaur
GRASS POISON
Role
Bulky SupportAbility
Overgrow+SpD
100 +15Spe
80Quagsire
WATER GROUND
Role
Bulky SupportAbility
Unaware+SpD
65 +11Spe
35Latias
DRAGON PSYCHIC
Role
Bulky SupportAbility
Levitate+SpD
130 +18Spe
110Registeel
STEEL
Role
Bulky SupportAbility
Clearbody+SpD
150 +20Spe
50Haunter
GHOST POISON
Role
Bulky SupportAbility
Levitate+SpD
55 +10Spe
95Koffing
POISON
Role
Bulky SupportAbility
Neutralizinggas+SpD
45 +9Spe
35Clefairy
FAIRY
Role
Bulky SupportAbility
Friendguard+SpD
65 +11Spe
35Celebi
PSYCHIC GRASS
Role
Bulky SupportAbility
Natural Cure+SpD
100 +15Spe
100Camerupt
FIRE GROUND
Role
Bulky SupportAbility
Solidrock+SpD
75 +12Spe
40Sableye
DARK GHOST
Role
Bulky SupportAbility
Prankster+SpD
65 +11Spe
50Wigglytuff
NORMAL FAIRY
Role
Bulky SupportAbility
Competitive+SpD
50 +10Spe
45Blastoise
WATER
Role
Bulky SupportAbility
Raindish+SpD
105 +15Spe
78Masquerain
BUG
Role
Bulky SupportAbility
Intimidate+SpD
82 +13Spe
80Chimecho
PSYCHIC
Role
Bulky SupportAbility
Levitate+SpD
90 +14Spe
65Cradily
ROCK GRASS
Role
Bulky SupportAbility
Stormdrain+SpD
107 +15Spe
43Mantine
WATER
Role
Bulky SupportAbility
Waterabsorb+SpD
140 +19Spe
70Bellossom
GRASS
Role
Bulky SupportAbility
Chlorophyll+SpD
100 +15Spe
50Togetic
FAIRY
Role
Bulky SupportAbility
Superluck+SpD
105 +15Spe
40Meganium
GRASS
Role
Bulky SupportAbility
Overgrow+SpD
100 +15Spe
80Misdreavus
GHOST
Role
Bulky SupportAbility
Levitate+SpD
85 +13Spe
85Tropius
GRASS
Role
Bulky SupportAbility
Harvest+SpD
87 +13Spe
51Magmar
FIRE
Role
Bulky SupportAbility
Flame Body+SpD
85 +13Spe
93Mr. Mime
PSYCHIC FAIRY
Role
Special TankAbility
Technician+SpD
120 +17Spe
90Illumise
BUG
Role
Bulky SupportAbility
Prankster+SpD
85 +13Spe
85Exeggutor
GRASS PSYCHIC
Role
Special TankAbility
Harvest+SpD
75 +12Spe
55Noctowl
NORMAL
Role
Bulky SupportAbility
Tintedlens+SpD
96 +14Spe
70Glalie
ICE
Role
Bulky SupportAbility
Moody+SpD
80 +13Spe
80Wobbuffet
PSYCHIC
Role
Bulky SupportAbility
Shadowtag+SpD
58 +11Spe
33Volbeat
BUG
Role
Bulky SupportAbility
Prankster+SpD
85 +13Spe
85Wailord
WATER
Role
Bulky SupportAbility
Pressure+SpD
45 +9Spe
60Gloom
GRASS POISON
Role
Bulky SupportAbility
Stench+SpD
75 +12Spe
40Roselia
GRASS POISON
Role
Bulky SupportAbility
Natural Cure+SpD
80 +13Spe
65Claydol
GROUND PSYCHIC
Role
Bulky SupportAbility
Levitate+SpD
120 +17Spe
75Walrein
ICE WATER
Role
Bulky SupportAbility
Icebody+SpD
90 +14Spe
65Swalot
POISON
Role
Bulky SupportAbility
Stickyhold+SpD
83 +13Spe
55Dewgong
WATER ICE
Role
Bulky SupportAbility
Hydration+SpD
95 +14Spe
70Golduck
WATER
Role
UtilityAbility
Cloudnine+SpD
80 +13Spe
85Ampharos
ELECTRIC
Role
Bulky SupportAbility
Static+SpD
90 +14Spe
55Magcargo
FIRE ROCK
Role
Bulky SupportAbility
Flame Body+SpD
80 +13Spe
30Gorebyss
WATER
Role
Bulky SupportAbility
Swiftswim+SpD
75 +12Spe
52Venomoth
BUG POISON
Role
Bulky SupportAbility
Shielddust+SpD
75 +12Spe
90Numel
FIRE GROUND
Role
Bulky SupportAbility
Simple+SpD
45 +9Spe
35Seaking
WATER
Role
Bulky SupportAbility
Lightningrod+SpD
80 +13Spe
68Lileep
ROCK GRASS
Role
Bulky SupportAbility
Stormdrain+SpD
87 +13Spe
23Tangela
GRASS
Role
Bulky SupportAbility
Leafguard+SpD
40 +9Spe
60Sunflora
GRASS
Role
Special TankAbility
Chlorophyll+SpD
85 +13Spe
30Bulbasaur
GRASS POISON
Role
Bulky SupportAbility
Overgrow+SpD
65 +11Spe
45Jigglypuff
NORMAL FAIRY
Role
Bulky SupportAbility
Cutecharm+SpD
25 +7Spe
20Combusken
FIRE FIGHTING
Role
Bulky SupportAbility
Speed Boost+SpD
60 +11Spe
55Minun
ELECTRIC
Role
Bulky SupportAbility
Minus+SpD
85 +13Spe
95Corsola
WATER ROCK
Role
Bulky SupportAbility
Regenerator+SpD
95 +14Spe
35Tentacool
WATER POISON
Role
Bulky SupportAbility
Clearbody+SpD
100 +15Spe
70Duskull
GHOST
Role
Bulky SupportAbility
Levitate+SpD
90 +14Spe
25Hypno
PSYCHIC
Role
Bulky SupportAbility
Insomnia+SpD
115 +16Spe
67Dragonair
DRAGON
Role
Bulky SupportAbility
Shedskin+SpD
70 +12Spe
70Porygon
NORMAL
Role
Bulky SupportAbility
Download+SpD
75 +12Spe
40Ledian
BUG
Role
Bulky SupportAbility
Swarm+SpD
110 +16Spe
85Azurill
NORMAL FAIRY
Role
Bulky SupportAbility
Huge Power+SpD
40 +9Spe
20Stantler
NORMAL
Role
Bulky SupportAbility
Intimidate+SpD
65 +11Spe
85Solrock
ROCK PSYCHIC
Role
Bulky SupportAbility
Levitate+SpD
65 +11Spe
70Venonat
BUG POISON
Role
Bulky SupportAbility
Compoundeyes+SpD
55 +10Spe
45Seel
WATER
Role
UtilityAbility
Icebody+SpD
70 +12Spe
45Igglybuff
NORMAL FAIRY
Role
Bulky SupportAbility
Friendguard+SpD
20 +7Spe
15Eevee
NORMAL
Role
Bulky SupportAbility
Adaptability+SpD
65 +11Spe
55Vulpix
FIRE
Role
Bulky SupportAbility
Drought+SpD
65 +11Spe
65Kirlia
PSYCHIC FAIRY
Role
Bulky SupportAbility
Trace+SpD
55 +10Spe
50Baltoy
GROUND PSYCHIC
Role
Bulky SupportAbility
Levitate+SpD
70 +12Spe
55Gulpin
POISON
Role
Bulky SupportAbility
Stickyhold+SpD
53 +10Spe
40Wynaut
PSYCHIC
Role
Bulky SupportAbility
Shadowtag+SpD
48 +10Spe
23Dustox
BUG POISON
Role
Bulky SupportAbility
Shielddust+SpD
90 +14Spe
65Larvitar
ROCK GROUND
Role
Bulky SupportAbility
Guts+SpD
50 +10Spe
41Bayleef
GRASS
Role
Bulky SupportAbility
Overgrow+SpD
80 +13Spe
60Cleffa
FAIRY
Role
Bulky SupportAbility
Friendguard+SpD
55 +10Spe
15+10%Sp. Defense
-10%Attack
Flavor Preference
Likes Bitter, dislikes Spicy
Competitive Role
Special walls and support Pokemon that use special moves.
Calm vs Careful
Choose Calm
+Sp. Defense / -Attack
- Pokemon that need to check physical threats (use +Def)
- Pokemon that need to check special threats (use +SpD)
- Walls and tanks that rarely attack
Choose Careful
+Sp. Defense / -Sp. Attack
- Defensive Pokemon that still need attacking power
- Pokemon that run both physical and special moves
How to Get
SynchronizeLead with a Calm Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Calm nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse a Calm Mint to change stat effects to Calm. The original nature name stays but stats change. (Gen 8+)
Other +Sp. Defense Natures
What does the Calm nature do in Pokemon?
Calm raises Sp. Defense by 10% and lowers Attack by 10%. At level 100 with full investment, that's roughly a 30-point swing on the boosted stat. Pokemon with Calm nature prefer Bitter flavor and dislike Spicy.
What are the best Calm nature Pokemon?
Top Calm users include Clefable, Torkoal, Mew, and Milotic. They benefit from the Sp. Defense boost because their main damage comes from that stat. The Attack drop doesn't hurt them since they don't rely on it.
Is Calm a good nature for competitive Pokemon?
Calm is a strong competitive nature. It fills a solid niche for defensive builds. The key is matching it to Pokemon that don't need Attack in their moveset.
How do I get a Calm nature Pokemon?
Synchronize is the fastest method. Lead with a Pokemon that has Synchronize and Calm nature, and wild encounters match it (Gen 3+). Breeding works too: give the Calm parent an Everstone and all offspring inherit the nature. Nature Mints (Gen 8+) let you change the stat effect to Calm without rebreeding.
Should I use Calm or Careful?
Calm prioritizes special wall utility, while Careful goes for physical wall utility. Pick Calm when your Pokemon's role depends on the stat it boosts. Go with Careful when physical wall utility matters more for your team.