IMPISH NATURE CALCULATOR
Natures weren't part of the series until Generation III (Ruby & Sapphire), so Red & Blue doesn't have them. Every stat is calculated from base stats, IVs (called DVs back then), and Stat Experience alone. If you're looking for the Impish nature's stat effect, switch the game filter above to any Gen III or later title. That said, the concept still helps with planning teams for remakes like FireRed & LeafGreen or HeartGold & SoulSilver, where natures do apply.
BEST IMPISH NATURE POKEMON
Impish gives 10% Defense at the cost of Sp. Attack. Physical walls that rely on Body Slam, Knock Off, or U-turn over special coverage will want this. In Red & Blue, Rhydon, Kingler, Sandslash, and others all run Impish in competitive play. Red & Blue has no nature system. Transfer your Pokemon forward and breed for Impish in a modern title.
Impish raises Defense by 10% and lowers Sp. Attack by 10%. Physical walls that rely on physical or status moves. 24 Pokemon competitively run this nature.
| # | Pokemon | Tier | Role | Ability | +Def | -SpA | Spe |
|---|---|---|---|---|---|---|---|
| 1 |  Rhydon GROUNDROCK | B | Bulky Support | Rockhead | 120+17 | 45-7 | 40 |
| 2 |  Kingler WATER | B | Bulky Support | Shellarmor | 115+16 | 50-7 | 75 |
| 3 |  Sandslash GROUND | C | Bulky Support | Sandveil | 110+16 | 45-7 | 65 |
| 4 |  Machoke FIGHTING | C | Bulky Support | Guts | 70+12 | 50-7 | 45 |
| 5 |  Ditto NORMAL | C | Bulky Support | Imposter | 48+10 | 48-7 | 48 |
| 6 |  Weezing POISON | C | Bulky Support | Levitate | 120+17 | 85-11 | 60 |
| 7 |  Onix ROCKGROUND | C | Bulky Support | Rockhead | 160+21 | 30-5 | 70 |
| 8 |  Arbok POISON | C | Bulky Support | Intimidate | 69+12 | 65-9 | 80 |
| 9 |  Slowpoke WATERPSYCHIC | C | Bulky Support | Regenerator | 65+11 | 40-6 | 15 |
| 10 |  Sandshrew GROUND | C | Bulky Support | Sandveil | 85+13 | 20-4 | 40 |
| 11 |  Pinsir BUG | C | Physical Attacker | Hypercutter | 100+15 | 55-8 | 85 |
| 12 |  Golbat POISON | C | Bulky Support | Infiltrator | 70+12 | 65-9 | 90 |
| 13 |  Kangaskhan NORMAL | C | Bulky Support | Scrappy | 80+13 | 40-6 | 90 |
| 14 |  Weepinbell GRASSPOISON | C | Bulky Support | Chlorophyll | 50+10 | 85-11 | 55 |
| 15 |  Grimer POISON | C | Bulky Support | Poisontouch | 50+10 | 40-6 | 25 |
| 16 |  Muk POISON | C | Bulky Support | Poisontouch | 75+12 | 65-9 | 50 |
| 17 |  Parasect BUGGRASS | C | Bulky Support | Effect Spore | 80+13 | 60-8 | 30 |
| 18 |  Paras BUGGRASS | D | Physical Attacker | Dryskin | 55+10 | 45-7 | 25 |
| 19 |  Kabuto ROCKWATER | D | Bulky Support | Battlearmor | 90+14 | 55-8 | 55 |
| 20 |  Squirtle WATER | D | Bulky Support | Torrent | 65+11 | 50-7 | 43 |
| 21 |  Bulbasaur GRASSPOISON | D | Bulky Support | Overgrow | 49+10 | 65-9 | 45 |
| 22 |  Venonat BUGPOISON | D | Bulky Support | Compoundeyes | 50+10 | 40-6 | 45 |
| 23 |  Eevee NORMAL | D | Bulky Support | Adaptability | 50+10 | 45-7 | 55 |
| 24 |  Clefairy FAIRY | D | Bulky Support | Friendguard | 48+10 | 60-8 | 35 |
Rhydon
GROUND ROCK
Role
Bulky SupportAbility
Rockhead+Def
120 +17Spe
40Kingler
WATER
Role
Bulky SupportAbility
Shellarmor+Def
115 +16Spe
75Sandslash
GROUND
Role
Bulky SupportAbility
Sandveil+Def
110 +16Spe
65Machoke
FIGHTING
Role
Bulky SupportAbility
Guts+Def
70 +12Spe
45Ditto
NORMAL
Role
Bulky SupportAbility
Imposter+Def
48 +10Spe
48Weezing
POISON
Role
Bulky SupportAbility
Levitate+Def
120 +17Spe
60Onix
ROCK GROUND
Role
Bulky SupportAbility
Rockhead+Def
160 +21Spe
70Arbok
POISON
Role
Bulky SupportAbility
Intimidate+Def
69 +12Spe
80Slowpoke
WATER PSYCHIC
Role
Bulky SupportAbility
Regenerator+Def
65 +11Spe
15Sandshrew
GROUND
Role
Bulky SupportAbility
Sandveil+Def
85 +13Spe
40Pinsir
BUG
Role
Physical AttackerAbility
Hypercutter+Def
100 +15Spe
85Golbat
POISON
Role
Bulky SupportAbility
Infiltrator+Def
70 +12Spe
90Kangaskhan
NORMAL
Role
Bulky SupportAbility
Scrappy+Def
80 +13Spe
90Weepinbell
GRASS POISON
Role
Bulky SupportAbility
Chlorophyll+Def
50 +10Spe
55Grimer
POISON
Role
Bulky SupportAbility
Poisontouch+Def
50 +10Spe
25Muk
POISON
Role
Bulky SupportAbility
Poisontouch+Def
75 +12Spe
50Parasect
BUG GRASS
Role
Bulky SupportAbility
Effect Spore+Def
80 +13Spe
30Paras
BUG GRASS
Role
Physical AttackerAbility
Dryskin+Def
55 +10Spe
25Kabuto
ROCK WATER
Role
Bulky SupportAbility
Battlearmor+Def
90 +14Spe
55Squirtle
WATER
Role
Bulky SupportAbility
Torrent+Def
65 +11Spe
43Bulbasaur
GRASS POISON
Role
Bulky SupportAbility
Overgrow+Def
49 +10Spe
45Venonat
BUG POISON
Role
Bulky SupportAbility
Compoundeyes+Def
50 +10Spe
45Eevee
NORMAL
Role
Bulky SupportAbility
Adaptability+Def
50 +10Spe
55Clefairy
FAIRY
Role
Bulky SupportAbility
Friendguard+Def
48 +10Spe
35IMPISH NATURE GUIDE
+10%Defense
-10%Sp. Attack
Flavor Preference
Likes Sour, dislikes Dry
Competitive Role
Physical walls that rely on physical or status moves.
Impish vs Bold
Choose Impish
+Defense / -Sp. 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 Bold
+Defense / -Attack
- Defensive Pokemon that still need attacking power
- Pokemon that run both physical and special moves
How to Get
SynchronizeLead with a Impish Pokemon that has the Synchronize ability. Wild Pokemon will match its nature. (Gen 3+)
BreedingGive the parent with Impish nature an Everstone. The offspring will inherit it. (100% since Gen 5)
Nature MintUse an Impish Mint to change stat effects to Impish. The original nature name stays but stats change. (Gen 8+)
Other +Defense Natures
IMPISH FAQs
What does the Impish nature do in Pokemon?
It's a +10% Defense, -10% Sp. Attack nature. The 10% multiplier applies after base stats and EVs, so the actual point difference grows as stats get higher. Pokemon with Impish nature prefer Sour flavor and dislike Dry.
What are the best Impish nature Pokemon?
Rhydon, Kingler, Sandslash, and Machoke are among the strongest Impish picks. What they share is a reliance on Defense and little need for Sp. Attack. Check the tier list for current rankings.
Is Impish a good nature for competitive Pokemon?
Yes. It fills a solid niche for defensive builds. You'll see Impish on dedicated Defense-focused builds across most tiers and formats.
How do I get an Impish nature Pokemon?
Three options: (1) Synchronize lead forces wild Pokemon to match your lead's nature. (2) Everstone breeding passes the nature 100% of the time since Gen 5. (3) an Impish Mint changes the stat effects after the fact. Mints don't change the nature name, just the stat modifiers.
Should I use Impish or Bold?
It depends on what your team needs. Impish is the physical defense utility option. Bold is the special defense utility option. Most of the time, your Pokemon's moveset and role make the decision obvious.