#0014 · Generation I

Kakuna

Bug / Poison · Cocoon Pokémon — first seen in Generation I.

Just:

Showing the official games. Pick a ROM hack to see how it changes this Pokémon, or compare all of them.

Base stats

Stat	Base	Min	Max
HP	45	200	294
Attack	25	49	163
Defense	50	94	218
Sp. Attack	25	49	163
Sp. Defense	25	49	163
Speed	35	67	185
Total	205

Min and max are at level 100: the minimum is 0 IVs, 0 EVs and a hindering nature, the maximum 31 IVs, 252 EVs and a beneficial nature. Shedinja's HP is always 1 whatever the formula says.

Type defences

Damage Kakuna takes from each attacking type.

×2

FlyingRockFirePsychic

×½

PoisonBugFairy

×¼

FightingGrass

×1

NormalGroundGhostSteelWaterElectricIceDragonDark

Evolution

Weedle#0013

Level 7

Kakuna#0014

Level 10

Beedrill#0015

Methods are the current official ones. A ROM hack may change them — trade evolutions especially; the guide table below says which do.

Moves by official game

Level-up, TM/HM, tutor and egg moves exactly as each game has them. The newest game this site covers is open; the rest fold out.

Ultra Sun / Ultra Moon2 level-up · 3 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
—	Harden	Normal	Status	—	—	30
1	Harden	Normal	Status	—	—	30

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Iron Defense	Steel	Status	—	—	15
Bug Bite	Bug	Physical	60	100%	20
Electroweb	Electric	Special	55	95%	15

Sun / Moon2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
—	Harden	Normal	Status	—	—	30
1	Harden	Normal	Status	—	—	30

Omega Ruby / Alpha Sapphire2 level-up · 3 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Iron Defense	Steel	Status	—	—	15
Bug Bite	Bug	Physical	60	100%	20
Electroweb	Electric	Special	55	95%	15

X / Y2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Black 2 / White 22 level-up · 3 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Move tutor

Move	Type	Cat.	Power	Acc.	PP
Iron Defense	Steel	Status	—	—	15
Bug Bite	Bug	Physical	60	100%	20
Electroweb	Electric	Special	55	95%	15

Black / White2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

HeartGold / SoulSilver2 level-up · 3 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Move tutor

Move	Type	Cat.	Power	Acc.	PP
String Shot	Bug	Status	—	95%	40
Iron Defense	Steel	Status	—	—	15
Bug Bite	Bug	Physical	60	100%	20

Platinum2 level-up · 1 tutor

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Move tutor

	Move	Type	Cat.	Power	Acc.	PP
	Iron Defense	Steel	Status	—	—	15

Diamond / Pearl2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

FireRed / LeafGreen2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Emerald2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Ruby / Sapphire2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Crystal2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Gold / Silver2 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30
7	Harden	Normal	Status	—	—	30

Yellow1 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30

Red / Blue1 level-up

Level-up

Lv	Move	Type	Cat.	Power	Acc.	PP
1	Harden	Normal	Status	—	—	30

Where to find it in the official games

Every area in the 16 official games on this site that has it, from each game's own encounter tables.

In the wild

Game	Area	Method	Levels	Rate
Red / Blue	Route 24	Grass	8	20%
Red / Blue	Route 25	Grass	7-9	20%
Red / Blue	Viridian Forest	Grass	4-6	40%
Gold / Silver	Azalea Town	Headbutt low	10	15%
Gold / Silver	Ilex Forest	Grass morning	5-6	30%
Gold / Silver	Ilex Forest	Headbutt low	10	15%
Gold / Silver	Lake of Rage	Headbutt low	10	15%
Gold / Silver	National Park	Grass morning	10	30%
Gold / Silver	Route 2	Grass morning	5	20%
Gold / Silver	Route 26	Headbutt low	10	15%
Gold / Silver	Route 27	Headbutt low	10	15%
Gold / Silver	Route 30	Grass morning	4-5	15%
Gold / Silver	Route 31	Grass morning	5-6	15%
Gold / Silver	Route 34	Headbutt low	10	15%
Gold / Silver	Route 35	Headbutt low	10	15%
Gold / Silver	Route 36	Headbutt low	10	15%
Gold / Silver	Route 37	Headbutt low	10	15%
Gold / Silver	Route 38	Headbutt low	10	15%
Gold / Silver	Route 39	Headbutt low	10	15%
Crystal	Ilex Forest	Grass morning	7	10%
Crystal	Ilex Forest rare	Headbutt high	10	5%
FireRed / LeafGreen	Pattern Bush	Grass	9	20%
FireRed / LeafGreen	Route 24 rare	Grass	8	4%
FireRed / LeafGreen	Route 25 rare	Grass	9	4%
FireRed / LeafGreen	Viridian Forest	Grass	4-6	10%
Diamond / Pearl	Eterna Forest	Grass morning, LeafGreen in the GBA slot, morning, Poké Radar, LeafGreen in the GBA slot, night, LeafGreen in the GBA slot, night, Poké Radar, LeafGreen in the GBA slot, swarm, morning, LeafGreen in the GBA slot, swarm, morning, Poké Radar, LeafGreen in the GBA slot, swarm, night, LeafGreen in the GBA slot, swarm, night, Poké Radar, LeafGreen in the GBA slot	12	8%
Platinum	Eterna Forest rare	Grass LeafGreen in the GBA slot, Poké Radar, LeafGreen in the GBA slot, morning, LeafGreen in the GBA slot, morning, Poké Radar, LeafGreen in the GBA slot, night, LeafGreen in the GBA slot, night, Poké Radar, LeafGreen in the GBA slot, swarm, LeafGreen in the GBA slot, swarm, Poké Radar, LeafGreen in the GBA slot, swarm, morning, LeafGreen in the GBA slot, swarm, morning, Poké Radar, LeafGreen in the GBA slot, swarm, night, LeafGreen in the GBA slot, swarm, night, Poké Radar, LeafGreen in the GBA slot	13	4%
HeartGold / SoulSilver	Ilex Forest	Grass Hoenn Sound, Sinnoh Sound, morning, morning, Hoenn Sound, morning, Sinnoh Sound	5-6	30%
HeartGold / SoulSilver	Ilex Forest	Headbutt common trees	3-5	10%
HeartGold / SoulSilver	National Park	Grass Hoenn Sound, National Pokédex, Tuesdays, Bug-Catching Contest, Sinnoh Sound, before the National Pokédex, Bug-Catching Contest, morning, morning, Hoenn Sound, morning, Sinnoh Sound	9-36	30%
HeartGold / SoulSilver	Route 2	Grass morning, night, night, Hoenn Sound, night, Sinnoh Sound	3-7	20%
HeartGold / SoulSilver	Route 30	Grass Hoenn Sound, Sinnoh Sound, morning, morning, Hoenn Sound, morning, Sinnoh Sound	4	15%
HeartGold / SoulSilver	Route 31	Grass Hoenn Sound, Sinnoh Sound, morning, morning, Hoenn Sound, morning, Sinnoh Sound	5	15%
HeartGold / SoulSilver	Route 47	Headbutt special trees	25-28	50%
HeartGold / SoulSilver	Viridian Forest	Grass morning, swarm, swarm, morning	3-5	30%
Black / White	Route 12	Dark grass	59	10%
Black / White	Route 12	Grass	48	10%
X / Y	Santalune Forest rare	Grass	4	4%

Where to find it in the ROM hacks

36 guides on this site put it somewhere you can catch it. Areas link to that guide's own route page, with its own rates and levels.

Guide	Where
Unbound	Vivill WoodsNight · Lv 39-41 · 5%rare
Pokémon Soulgold	Ilex ForestGrass · Lv 11-15 · 10% National Park Bug ContestGrass · Lv 17 · 10% National Park NormalGrass · Lv 13-15 · 15%
Pokémon Heart & Soul	Ilex ForestGrass · Lv 9 · 6%rare National ParkGrass · Lv 17 · 10% Viridian ForestGrass · Lv 45-46 · 10%
Infinite Fusion	Hidden ForestGrass (Day) (Classic) · Lv 15-19 · 10% Viridian RiverGrass (Night) (Classic) · Lv 20 · 15% Viridian ForestGrass (Day) (Classic) · Lv 4-6 · 10% and 8 more areas
Celia's Stupid Romhack	Six Island Pattern BushGrass · Lv 9 · 20%
Pokémon Phoenix Red	Route 24Grass · Lv 14 · 20%
Elite Redux	Petalburg Woods 2Grass · Lv — · 20%
Pokémon GS Chronicles	Ilex ForestWild · Lv — National Park (Bug Contest)Wild · Lv —
Pokémon Emerald Kaizo	Route 116Grass · Lv 9 · 1%rare
Inclement Emerald	Petalburg WoodsGrass · Lv Scales · 20%
Renegade Platinum	Route 207Honey Tree · Lv 21 · 20% Route 211 ~ EastHoney Tree · Lv 18 · 20% Route 215Honey Tree · Lv 28 · 20%
Pokémon FireRed & LeafGreen+	Viridian ForestGrass · Lv 4-6 · 10% Viridian ForestGrass · Lv 5 · 5%rare Route 24Grass · Lv 8 · 4%rare and 5 more areas
Pokemon Modern Emerald	Petalburg WoodsGrass (night) · Lv 5 · 10%
Pokémon Emerald Ex	Route 1035Grass · Lv ? · 5%rare
Blinding White Plus	Pinwheel ForestGrass · Lv 26-28 · 10% Pinwheel MeadowGrass · Lv 26-28 · 10%
Pokémon Valiant	Route 24Grass · Lv 8 · 4%rare Route 24Grass · Lv 8 · 1%rare Route 25Grass · Lv 9 · 4%rare and 5 more areas
Pokémon Platinum Kaizo	Floaroma TownGrass · Lv 7 · 5%
Pokémon Classic	Viridian ForestGrass (day) · Lv 4-6 · 15% Viridian ForestGrass (night) · Lv 4-6 · 25%
Pokémon Exceeded	Abandoned ShipHeadbutt · Lv 10-15 · 10% Desert UnderpassHeadbutt · Lv 10-15 · 10% Dewford TownHeadbutt · Lv 10-15 · 10% and 63 more areas
Pokémon WaveBlue	Viridian ForestGrass · Lv 5-6 · 5%rare Pattern BushGrass · Lv 9 · 20% Route 24Grass · Lv 8 · 4%rare and 1 more area
Low Budget Crystal	Ilex ForestHeadbutt (rare tree) · Lv 10 · 5%rare
Pokémon Emerald Squared	Petalburg WoodsLand · Lv 4-8 · 5%
Pokémon Tourmaline	Reseda WoodsWalk (morning) · Lv — · 5%rare Reseda WoodsWalk (day) · Lv — · 5%rare Reseda WoodsWalk (night) · Lv — · 5%rare and 1 more area
Pokémon FireRed Reignited & LeafGreen Regrown	Viridian ForestGrass · Lv 5-6 · 9% Viridian ForestGrass · Lv 5-6 · 9% Viridian ForestGrass after the wish · Lv 5 · 5%rare and 3 more areas
Pokémon Polished Crystal	Ilex ForestGrass (day) · Lv 10 · 10% Ilex ForestGrass (morning) · Lv 10 · 10% Ilex ForestHeadbutt (rare tree) · Lv 10 · 5%rare and 5 more areas
Sacred Gold & Storm Silver	Route 30Grass (day) · Lv 4-6 · 10% Route 31Grass (morning) · Lv 6-10 · 4%rare Route 31Grass (night) · Lv 6-10 · 4%rare and 3 more areas
Pokémon SoothingSilver	Route 30Grass (morning) · Lv 4 · 5%rare Route 30Grass (day) · Lv 4 · 5%rare Route 31Grass (morning) · Lv 5 · 5%rare and 11 more areas
Fire Red Omega	Viridian ForestGrass · Lv —
Pokémon FireRed: Rocket Edition	Route 24Grass · Lv 4-6 · 4%rare Route 25Grass · Lv 4-6 · 4%rare Viridian ForestGrass · Lv 17-20 · 20%
Pokemon Kanto Expansion Pak	Viridian ForestGrass · Lv 7 · 5.1%
Pokémon Peridot Version	Route 1Headbutt · Lv 14 · 15% Route 10Headbutt · Lv 14 · 15% Route 11Headbutt · Lv 14 · 15% and 11 more areas
Pokémon FireRed Deluxe	Viridian ForestGrass · Lv 5-6 · 5%
Pokémon Platinum Redux	Power PlantPalmer · Lv ? Route 205Grass · Lv ? · 10%
Pokémon Sour Crystal	Ilex ForestHeadbutt (rare tree) · Lv 10 · 5%rare Ilex ForestSwarm · Lv 7 Ilex ForestSwarm · Lv 7 and 17 more areas
Pokémon Timeless Diamond & Spaceless Pearl	Route 229Walking (Morning) · Lv 56 · 20% Route 229Walking (Day) · Lv 56 · 20% Route 229Walking (Night) · Lv 56 · 20%
Pokémon Crystal Legacy	Ilex ForestGrass (day) · Lv 9 · 5%rare Ilex ForestHeadbutt (rare tree) · Lv 10 · 5%rare National Park Bug ContestBug-Catching Contest · Lv 9 · 10%
Emerald Rogue	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon R.O.W.E	not in the wild in this guide's tables — evolve, trade or battle it
Sword and Shield Ultimate Plus	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Odyssey	not in the wild in this guide's tables — evolve, trade or battle it
Blaze Black 2 Redux & Volt White 2 Redux	not in the wild in this guide's tables — evolve, trade or battle it
Radical Red	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Aesthetic Red	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crippling Medical Debt Edition	not in the wild in this guide's tables — evolve, trade or battle it
Gaia	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Imperium	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon: Wishes of Tomorrow	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Hoenn's Last Wish	not in the wild in this guide's tables — evolve, trade or battle it
Blaze Black 2 & Volt White 2	not in the wild in this guide's tables — evolve, trade or battle it
Rising Ruby & Sinking Sapphire	not in the wild in this guide's tables — evolve, trade or battle it
Blaze Black & Volt White	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Omega Ruby Origins	not in the wild in this guide's tables — evolve, trade or battle it
HeartGold Generations	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Parallel Emerald	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Black Pearl Emerald	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Project Nova	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Overcomplicated	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Rule-ette	not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Mirror Gold	not in the wild in this guide's tables — evolve, trade or battle it

Compare official Kakuna with the ROM hacks →

In the 59 guides that include it

Changed in 49 of 59 guides: retyped in 1, stats in 7, abilities in 14, evolution in 45.

Every ROM hack on this site that has Kakuna, and what it did to it. Guides that changed something are first. Click one for that version's full page — locations, moveset and TMs.

Guide		Type	Total	Abilities
Unbound Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin, Shed Skin, Shed Skin
Pokémon Soulgold Evolves into Beedrill — Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Heart & Soul Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Infinite Fusion Evolves into: Beedrill (Level 10)	Changed	BugPoison	205	Shed Skin, Shed Skin
Pokémon R.O.W.E Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Celia's Stupid Romhack	Changed	BugPoison	205	Battle Arms, Battle Arms + Battle Arms, Battle Arms
Sword and Shield Ultimate Plus Evolves into Beedrill — Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Odyssey Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shell Armor, Shed Skin + Shell Armor
Blaze Black 2 Redux & Volt White 2 Redux	Changed	BugPoison	205	Shed Skin, Battle Armor, Shed Skin + Battle Armor
Pokémon Phoenix Red Evolves into Beedrill at Level 12	Changed	BugPoison	340 +135 +20 HP, +35 Attack, +15 Defense, +40 Sp. Def, +25 Speed	Shed Skin, Shield Dust + Shield Dust
Radical Red Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Elite Redux Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin, Shell Armor, Corrosion
Pokémon Emerald Kaizo Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Inclement Emerald Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon FireRed & LeafGreen+ Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Aesthetic Red Evolves into Beedrill — LVL 12	Changed	BugPoison	205	Sniper, Adaptability + Sniper, Adaptability − Shed Skin
Pokemon Modern Emerald Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Crippling Medical Debt Edition Evolves into Beedrill at Level 10	Changed		0 -205 -45 HP, -25 Attack, -50 Defense, -25 Sp. Atk, -25 Sp. Def, -35 Speed	—
Blinding White Plus Evolves at Level 30	Changed	BugPoison	370 +165 +5 HP, +75 Attack, +15 Sp. Atk, +15 Sp. Def, +55 Speed	Shield Dust, Sniper + Shield Dust, Sniper − Shed Skin
Pokémon Valiant Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin
Pokémon Emerald Imperium Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin
Pokémon Platinum Kaizo Evolves into Beedrill at Lv. 10	Changed	BugPoison	235 +30 +30 Sp. Def	Shed Skin
Pokémon Classic Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon: Wishes of Tomorrow Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Exceeded Evolves into Beedrill at level 10	Changed	BugPoison	205	Shield Dust
Pokémon WaveBlue Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Hoenn's Last Wish Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Low Budget Crystal Evolves into Beedrill at level 10	Changed	BugPoison	205	—
Pokémon Emerald Squared Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin
Pokémon FireRed Reignited & LeafGreen Regrown Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Polished Crystal Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin
Blaze Black 2 & Volt White 2	Changed	BugPoison	205	Shed Skin, Battle Armor + Battle Armor
Pokémon SoothingSilver Evolves into Beedrill at Lv. 10	Changed	BugPoison	205	Shed Skin, Shield Dust + Shield Dust
Blaze Black & Volt White	Changed	BugPoison	205	Shed Skin, Battle Armor + Battle Armor
Pokémon FireRed: Rocket Edition Evolves into Beedrill at Level 10	Changed	BugPoison	205 +10 Sp. Atk, -10 Speed	Shed Skin, Shed Skin
Pokemon Kanto Expansion Pak Evolves into Beedrill at level 10	Changed	BugPoison	205	—
Pokémon Omega Ruby Origins Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Peridot Version Evolves into Beedrill at level 10	Changed	BugPoison	205	—
HeartGold Generations Evolves into Beedrill — at level 10	Changed	BugPoison	205	Shed Skin, Adaptability + Adaptability
Pokémon FireRed Deluxe Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Platinum Redux Evolves at Lv. 20. The documentation gives the level but not what it turns into	Changed	BugPoison	420 +215 +40 HP, +55 Attack, +25 Defense, +30 Sp. Atk, +60 Sp. Def, +5 Speed	Shed Skin
Pokémon Parallel Emerald Evolves into Beedrill at level 10	Changed	BugPoison	205	Shed Skin
Pokémon Sour Crystal Evolves into Beedrill at level 10	Changed	BugPoison	205	—
Pokémon Black Pearl Emerald Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Project Nova Evolves into Beedrill at Level 12	Changed	BugPoison→Bug	205	Shield Dust + Shield Dust − Shed Skin
Pokémon Emerald Rule-ette Evolves into Beedrill at Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Mirror Gold Evolves into Beedrill — at level 36	Changed	BugPoison	370 +165 +25 HP, +40 Attack, +5 Defense, +40 Sp. Atk, +60 Sp. Def, -5 Speed	Shed Skin
Pokémon Timeless Diamond & Spaceless Pearl Evolves into Beedrill — Level 10	Changed	BugPoison	205	Shed Skin
Pokémon Crystal Legacy Evolves into Beedrill at level 10	Changed	BugPoison	205	—
Emerald Rogue	Unchanged	BugPoison	205	Shed Skin
Pokémon GS Chronicles	Unchanged	BugPoison	205	Shed Skin
Renegade Platinum	Unchanged	BugPoison	205	Shed Skin
Pokémon Emerald Ex	Unchanged	BugPoison	205	—
Gaia	Unchanged	BugPoison	205	Shed Skin
Pokémon Tourmaline	Unchanged		205	—
Sacred Gold & Storm Silver	Unchanged	BugPoison	205	Shed Skin
Rising Ruby & Sinking Sapphire	Unchanged	BugPoison	205	Shed Skin
Fire Red Omega	Unchanged	BugPoison	205	Shed Skin
Pokémon Overcomplicated	Unchanged	BugPoison	205	Poison Point, Cud Chew

Pokédex entries

What each game says about it, in the games' own words.

Red / Blue	Almost incapable of moving, this POKéMON can only harden its shell to protect itself from predators.
Yellow	Able to move only slightly. When endangered, it may stick out its stinger and poison its enemy.
Gold / HeartGold	Although it is a cocoon, it can move a little. It can extend its poison barb if it is attacked.
Silver	From this form, it will grow into an adult. As its body becomes soft er, the external shell hardens.
Crystal	Nearly incapable of movement, it leans against stout trees while waiting for its evolution.
Ruby / Sapphire	KAKUNA remains virtually immobile as it clings to a tree. However, on the inside, it is extremely busy as it prepares for its coming evolution. This is evident from how hot the shell becomes to the touch.
Emerald	It remains virtually immobile while it clings to a tree. However, on the inside, it busily prepares for evolution. This is evident from how hot its shell becomes.
FireRed	This POKéMON is in a temporary stage while making its body. It is almost completely unable to move on its own.
LeafGreen	Almost incapable of moving, this POKéMON can only harden its shell to protect itself when it is in danger.
Diamond / Pearl / Platinum / Black / White / Black 2 / White 2 / Y	While awaiting evolution, it hides from predators under leaves and in nooks of branches.
SoulSilver	From this form, it will grow into an adult. As its body becomes softer, the external shell hardens.
X	Almost incapable of moving, this Pokémon can only harden its shell to protect itself when it is in danger.
Omega Ruby / Alpha Sapphire	Kakuna remains virtually immobile as it clings to a tree. However, on the inside, it is extremely busy as it prepares for its coming evolution. This is evident from how hot the shell becomes to the touch.

Names in other languages

Japanese	コクーン
Japanese (Rōmaji)	Cocoon
German	Kokuna
French	Coconfort
Spanish	Kakuna
Italian	Kakuna
Korean	딱충이
Chinese (Simplified)	铁壳蛹
Chinese (Traditional)	鐵殼蛹

Official data here is present-day reference data from PokéAPI, not a snapshot of any one game's era — the Fairy type and hidden abilities arrived partway through the series, so a difference against an older game can belong to the series rather than to that ROM hack.