SASSY NATURE CALCULATOR
Check how Sassy nature changes any Pokemon's stats at level 50. Sassy boosts Sp. Defense by 10% and cuts Speed by the same amount, so it matters more for some builds than others. Type a name below to see the exact stat shift and whether Sassy is the right call.
In Emerald, natures are permanent and can't be changed after catching or breeding.
Select a Pokemon above to see how Sassy changes their stats
BEST SASSY NATURE POKEMON
Sassy boosts Sp. Defense by 10% and drops Speed. For slow walls and Trick Room special tanks, that Speed cut is a bonus. In Emerald, Dusclops, Regirock, Slowking, and others all run Sassy in competitive play. Synchronize is your best bet for Sassy in Emerald. Lead with a Synchronize Pokemon that already has it.
Sassy raises Sp. Defense by 10% and lowers Speed by 10%. Slow special walls, often paired with Trick Room. 28 Pokemon competitively run this nature.
SHOWINGRegional15
| # | Pokemon | Tier | Role | Ability | +SpD | -Spe | Spe |
|---|---|---|---|---|---|---|---|
| 1 |  Dusclops GHOST | B | Bulky Support | Pressure | 130+18 | 25-5 | 25 |
| 2 |  Regirock ROCK | B | Bulky Support | Clearbody | 100+15 | 50-7 | 50 |
| 3 |  Slowking WATERPSYCHIC | C | Bulky Support | Regenerator | 110+16 | 30-5 | 30 |
| 4 |  Porygon NORMAL | C | Bulky Support | Trace | 75+12 | 40-6 | 40 |
| 5 |  Camerupt FIREGROUND | C | Bulky Support | Solidrock | 75+12 | 40-6 | 40 |
| 6 |  Flareon FIRE | C | Physical Tank | Guts | 110+16 | 65-9 | 65 |
| 7 |  Gloom GRASSPOISON | C | Bulky Support | Chlorophyll | 75+12 | 40-6 | 40 |
| 8 |  Natu PSYCHIC | C | Utility | Synchronize | 45+9 | 70-9 | 70 |
| 9 |  Tangela GRASS | C | Bulky Support | Regenerator | 40+9 | 60-8 | 60 |
| 10 |  Volbeat BUG | C | Bulky Support | Prankster | 85+13 | 85-11 | 85 |
| 11 |  Teddiursa NORMAL | C | Bulky Support | Quickfeet | 50+10 | 40-6 | 40 |
| 12 |  Swalot POISON | C | Bulky Support | Liquidooze | 83+13 | 55-8 | 55 |
| 13 |  Onix ROCKGROUND | C | Physical Tank | Sturdy | 45+9 | 70-9 | 70 |
| 14 |  Drowzee PSYCHIC | C | Bulky Support | Innerfocus | 90+14 | 42-7 | 42 |
| 15 |  Parasect BUGGRASS | C | Bulky Support | Effect Spore | 80+13 | 30-5 | 30 |
| 16 |  Banette GHOST | C | Bulky Support | Cursedbody | 63+11 | 65-9 | 65 |
| 17 |  Marill WATERFAIRY | C | Bulky Support | Sapsipper | 50+10 | 40-6 | 40 |
| 18 |  Grimer POISON | C | Bulky Support | Stickyhold | 50+10 | 25-5 | 25 |
| 19 |  Cacnea GRASS | C | Bulky Support | Sandveil | 40+9 | 35-6 | 35 |
| 20 |  Gastly GHOSTPOISON | C | Utility | Levitate | 35+8 | 80-10 | 80 |
| 21 |  Numel FIREGROUND | D | Bulky Support | Oblivious | 45+9 | 35-6 | 35 |
| 22 |  Paras BUGGRASS | D | Bulky Support | Effect Spore | 55+10 | 25-5 | 25 |
| 23 |  Ralts PSYCHICFAIRY | D | Bulky Support | Synchronize | 35+8 | 40-6 | 40 |
| 24 |  Shroomish GRASS | D | Bulky Support | Effect Spore | 60+11 | 35-6 | 35 |
| 25 |  Omanyte ROCKWATER | D | Bulky Support | Shellarmor | 55+10 | 35-6 | 35 |
| 26 |  Smoochum ICEPSYCHIC | D | Bulky Support | Forewarn | 65+11 | 65-9 | 65 |
| 27 |  Tyrogue FIGHTING | D | Bulky Support | Guts | 35+8 | 35-6 | 35 |
| 28 |  Azurill NORMALFAIRY | D | Bulky Support | Sapsipper | 40+9 | 20-4 | 20 |
Dusclops
GHOST
Role
Bulky SupportAbility
Pressure+SpD
130 +18Spe
25Regirock
ROCK
Role
Bulky SupportAbility
Clearbody+SpD
100 +15Spe
50Slowking
WATER PSYCHIC
Role
Bulky SupportAbility
Regenerator+SpD
110 +16Spe
30Porygon
NORMAL
Role
Bulky SupportAbility
Trace+SpD
75 +12Spe
40Camerupt
FIRE GROUND
Role
Bulky SupportAbility
Solidrock+SpD
75 +12Spe
40Flareon
FIRE
Role
Physical TankAbility
Guts+SpD
110 +16Spe
65Gloom
GRASS POISON
Role
Bulky SupportAbility
Chlorophyll+SpD
75 +12Spe
40Natu
PSYCHIC
Role
UtilityAbility
Synchronize+SpD
45 +9Spe
70Tangela
GRASS
Role
Bulky SupportAbility
Regenerator+SpD
40 +9Spe
60Volbeat
BUG
Role
Bulky SupportAbility
Prankster+SpD
85 +13Spe
85Teddiursa
NORMAL
Role
Bulky SupportAbility
Quickfeet+SpD
50 +10Spe
40Swalot
POISON
Role
Bulky SupportAbility
Liquidooze+SpD
83 +13Spe
55Onix
ROCK GROUND
Role
Physical TankAbility
Sturdy+SpD
45 +9Spe
70Drowzee
PSYCHIC
Role
Bulky SupportAbility
Innerfocus+SpD
90 +14Spe
42Parasect
BUG GRASS
Role
Bulky SupportAbility
Effect Spore+SpD
80 +13Spe
30Banette
GHOST
Role
Bulky SupportAbility
Cursedbody+SpD
63 +11Spe
65Marill
WATER FAIRY
Role
Bulky SupportAbility
Sapsipper+SpD
50 +10Spe
40Grimer
POISON
Role
Bulky SupportAbility
Stickyhold+SpD
50 +10Spe
25Cacnea
GRASS
Role
Bulky SupportAbility
Sandveil+SpD
40 +9Spe
35Gastly
GHOST POISON
Role
UtilityAbility
Levitate+SpD
35 +8Spe
80Numel
FIRE GROUND
Role
Bulky SupportAbility
Oblivious+SpD
45 +9Spe
35Paras
BUG GRASS
Role
Bulky SupportAbility
Effect Spore+SpD
55 +10Spe
25Ralts
PSYCHIC FAIRY
Role
Bulky SupportAbility
Synchronize+SpD
35 +8Spe
40Shroomish
GRASS
Role
Bulky SupportAbility
Effect Spore+SpD
60 +11Spe
35Omanyte
ROCK WATER
Role
Bulky SupportAbility
Shellarmor+SpD
55 +10Spe
35Smoochum
ICE PSYCHIC
Role
Bulky SupportAbility
Forewarn+SpD
65 +11Spe
65Tyrogue
FIGHTING
Role
Bulky SupportAbility
Guts+SpD
35 +8Spe
35Azurill
NORMAL FAIRY
Role
Bulky SupportAbility
Sapsipper+SpD
40 +9Spe
20SASSY NATURE GUIDE
+10%Sp. Defense
-10%Speed
Flavor Preference
Likes Bitter, dislikes Sweet
Competitive Role
Slow special walls, often paired with Trick Room.
Sassy vs Calm
Choose Sassy
+Sp. Defense / -Speed
- 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 Calm
+Sp. Defense / -Attack
- Defensive Pokemon that still need attacking power
- Pokemon that run both physical and special moves
How to Get
SynchronizeLead with a Sassy Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Sassy nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse a Sassy Mint to change stat effects to Sassy. The original nature name stays but stats change. (Gen 8+)
Other +Sp. Defense Natures
SASSY FAQs
What does the Sassy nature do in Pokemon?
Sassy raises Sp. Defense by 10% and lowers Speed by 10%. At level 100 with full investment, that's roughly a 30-point swing on the boosted stat. Pokemon with Sassy nature prefer Bitter flavor and dislike Sweet.
What are the best Sassy nature Pokemon?
Top Sassy users include Dusclops, Regirock, Slowking, and Porygon. They benefit from the Sp. Defense boost because their main damage comes from that stat. The Speed drop doesn't hurt them since they don't rely on it.
Is Sassy a good nature for competitive Pokemon?
Sassy is a strong competitive nature. The -Speed drop actually helps under Trick Room, where slower Pokemon move first. The key is matching it to Pokemon that don't need Speed in their moveset.
How do I get a Sassy nature Pokemon?
Synchronize is the fastest method. Lead with a Pokemon that has Synchronize and Sassy nature, and wild encounters match it (Gen 3+). Breeding works too: give the Sassy parent an Everstone and all offspring inherit the nature. Nature Mints (Gen 8+) let you change the stat effect to Sassy without rebreeding.
Should I use Sassy or Calm?
Sassy prioritizes Trick Room special wall, while Calm goes for standard special wall. Pick Sassy when your Pokemon's role depends on the stat it boosts. Go with Calm when standard special wall matters more for your team.