Gen 2's premier Spikes setter, Bug/Steel Forretress spins hazards and Explodes at S-Tier in Crystal. A competitive staple from start to finish.
465HP75Attack90Defense140Speed40Sp.Def60Sp.Atk60
Pineco
Forretress
Weak to
Physical
Hazard Setter
40Speed · Very Slow

Is Forretress Good in Crystal Playthrough?

Bug/Steel with one weakness: Fire. Forretress absorbs physical hits that would knock out most of the roster and provides MoveSpikes for gradual damage. Crystal's E4 and Kanto rematches favor this defensive approach more than Gold or Silver's shorter endgame did.

StrongGoodEvenToughBadEEEETGGTETEGGSEEGGEGGPinecoCatchFalknerGym 1BugsyGym 2WhitneyGym 3MortyGym 4ChuckGym 5ForretressEvolveJasmineGym 6PryceGym 7ClairGym 8SurgeGym 9SabrinaGym 10ErikaGym 11JanineGym 12MistyGym 13BrockGym 14BlaineGym 15BlueGym 16WillE4KogaE4BrunoE4KarenE4LanceChamp*
Falkner
Gym 1
Even

Pineco trades roughly evenly with Falkner's team.

Even
Pidgey
Lv 7
NormalFlying
Keen Eye
TackleMud Slap
Even
Pidgeotto
Lv 9
NormalFlying
Keen Eye
TackleMud SlapGust
Bugsy
Gym 2
Even

Pineco trades roughly evenly with Bugsy's team.

Even
Metapod
Lv 14
Bug
Shed Skin
TackleString ShotHarden
Even
Kakuna
Lv 14
BugPoison
Shed Skin
Poison StingString ShotHarden
Risky
Scyther
Lv 16
BugFlying
Swarm
Quick AttackLeerFury Cutter
Whitney
Gym 3
Even

Pineco trades roughly evenly with Whitney's team.

Even
Clefairy
Lv 18
Normal
Cute Charm
Double SlapMimicEncoreMetronome
Risky
Miltank
Lv 20
Normal
Thick Fat
RolloutAttractStompMilk Drink
Morty
Gym 4
Even

Pineco trades roughly evenly with Morty's team.

Even
Gastly
Lv 21
GhostPoison
Levitate
LickSpiteMean LookCurse
Even
Haunter
Lv 21
GhostPoison
Levitate
HypnosisMimicCurseNight Shade
Risky
Gengar
Lv 25
GhostPoison
Cursed Body
HypnosisShadow BallMean LookDream Eater
Even
Haunter
Lv 23
GhostPoison
Levitate
SpiteMean LookMimicNight Shade
Chuck
Gym 5
Tough

Chuck's typing presses Pineco's defenses.

Even
Primeape
Lv 27
Fighting
Vital Spirit
LeerRageKarate ChopFury Swipes
Risky
Poliwrath
Lv 30
WaterFighting
Water Absorb
HypnosisMind ReaderSurfDynamic Punch
Jasmine
Gym 6
Good

Forretress has the type edge here and should clean up Jasmine's team.

You Win
Magnemite
Lv 30
ElectricSteel
Magnet Pull
ThunderboltSupersonicSonic BoomThunder Wave
You Win
Magnemite
Lv 30
ElectricSteel
Magnet Pull
ThunderboltSupersonicSonic BoomThunder Wave
Even
Steelix
Lv 35
SteelGround
Rock Head
ScreechSunny DayRock ThrowIron Tail
Pryce
Gym 7
Good

Forretress has the type edge here and should clean up Pryce's team.

You Win
Seel
Lv 27
Water
Thick Fat
HeadbuttIcy WindAurora BeamRest
You Win
Dewgong
Lv 29
WaterIce
Thick Fat
HeadbuttIcy WindAurora BeamRest
You Win
Piloswine
Lv 31
IceGround
Oblivious
Icy WindFury AttackMistBlizzard
Clair
Gym 8
Tough

Clair's typing presses Forretress's defenses.

Risky
Dragonair
Lv 37
Dragon
Shed Skin
Thunder WaveSurfSlamDragon Breath
Risky
Dragonair
Lv 37
Dragon
Shed Skin
Thunder WaveThunderboltSlamDragon Breath
Even
Dragonair
Lv 37
Dragon
Shed Skin
Thunder WaveIce BeamSlamDragon Breath
Risky
Kingdra
Lv 40
WaterDragon
Swift Swim
SmokescreenSurfHyper BeamDragon Breath
Lt. Surge
Gym 9
Even

Forretress trades roughly evenly with Lt. Surge's team.

Even
Raichu
Lv 44
Electric
Static
Thunder WaveQuick AttackThunderboltThunder
Even
Electrode
Lv 40
Electric
Soundproof
ScreechDouble TeamSwiftExplosion
You Win
Magneton
Lv 40
ElectricSteel
Magnet Pull
Lock OnDouble TeamSwiftZap Cannon
Even
Electrode
Lv 40
Electric
Soundproof
ScreechDouble TeamSwiftExplosion
Risky
Electabuzz
Lv 46
Electric
Static
Quick AttackThunder PunchLight ScreenThunder
Sabrina
Gym 10
Tough

Sabrina's typing presses Forretress's defenses.

Risky
Espeon
Lv 46
Psychic
Synchronize
Sand AttackQuick AttackSwiftPsychic
Risky
Mr Mime
Lv 46
Psychic
Soundproof
BarrierReflectBaton PassPsychic
Risky
Alakazam
Lv 48
Psychic
Synchronize
RecoverFuture SightPsychicReflect
Erika
Gym 11
Even

Forretress trades roughly evenly with Erika's team.

Even
Tangela
Lv 42
Grass
Chlorophyll
Vine WhipBindGiga DrainSleep Powder
You Win
Jumpluff
Lv 41
GrassFlying
Chlorophyll
Mega DrainLeech SeedCotton SporeGiga Drain
Even
Victreebel
Lv 46
GrassPoison
Chlorophyll
Sunny DaySynthesisAcidRazor Leaf
Even
Bellossom
Lv 46
Grass
Chlorophyll
Sunny DaySynthesisPetal DanceSolar Beam
Janine
Gym 12
Good

Forretress has the type edge here and should clean up Janine's team.

You Win
Crobat
Lv 36
PoisonFlying
Inner Focus
ScreechSupersonicConfuse RayWing Attack
Even
Weezing
Lv 36
Poison
Levitate
SmogSludge BombToxicExplosion
Even
Weezing
Lv 36
Poison
Levitate
SmogSludge BombToxicExplosion
Easy KO
Ariados
Lv 33
BugPoison
Swarm
Scary FaceGiga DrainString ShotNight Shade
You Win
Venomoth
Lv 39
BugPoison
Shield Dust
ForesightDouble TeamGustPsychic
Misty
Gym 13
Good

Forretress has the type edge here and should clean up Misty's team.

You Win
Golduck
Lv 42
Water
Damp
SurfDisablePsych UpPsychic
Easy KO
Quagsire
Lv 42
WaterGround
Damp
SurfAmnesiaEarthquakeRain Dance
Even
Lapras
Lv 44
WaterIce
Water Absorb
SurfPerish SongBlizzardRain Dance
Even
Starmie
Lv 47
WaterPsychic
Illuminate
SurfConfuse RayRecoverIce Beam
Brock
Gym 14
Strong

Forretress resists most of Brock's coverage and hits back hard.

Easy KO
Graveler
Lv 41
RockGround
Rock Head
Defense CurlRock SlideRolloutEarthquake
Easy KO
Rhyhorn
Lv 41
GroundRock
Lightning Rod
Fury AttackScary FaceEarthquakeHorn Drill
Easy KO
Omastar
Lv 42
RockWater
Swift Swim
BiteSurfProtectSpike Cannon
Easy KO
Onix
Lv 44
RockGround
Rock Head
BindRock SlideBideSandstorm
Easy KO
Kabutops
Lv 42
RockWater
Swift Swim
SlashSurfEndureGiga Drain
Blaine
Gym 15
Even

Forretress trades roughly evenly with Blaine's team.

Even
Magcargo
Lv 45
FireRock
Magma Armor
CurseSmogFlamethrowerRock Slide
Even
Magmar
Lv 45
Fire
Flame Body
Thunder PunchFire PunchSunny DayConfuse Ray
Even
Rapidash
Lv 50
Fire
Run Away
Quick AttackFire SpinFury AttackFire Blast
Blue
Gym 16
Even

Forretress trades roughly evenly with Blue's team.

You Win
Pidgeot
Lv 56
NormalFlying
Keen Eye
Quick AttackWhirlwindWing AttackMirror Move
Risky
Alakazam
Lv 54
Psychic
Synchronize
DisableRecoverPsychicReflect
Easy KO
Rhydon
Lv 56
GroundRock
Lightning Rod
Fury AttackSandstormRock SlideEarthquake
Even
Gyarados
Lv 58
WaterFlying
Intimidate
TwisterHydro PumpRain DanceHyper Beam
Even
Exeggutor
Lv 58
GrassPsychic
Chlorophyll
Sunny DayLeech SeedEgg BombSolar Beam
Risky
Arcanine
Lv 58
Fire
Intimidate
RoarSwiftFlamethrowerExtreme Speed
Will
Elite Four
Good

Forretress has the type edge here and should clean up Will's team.

You Win
Xatu
Lv 40
PsychicFlying
Synchronize
Quick AttackFuture SightConfuse RayPsychic
You Win
Jynx
Lv 41
IcePsychic
Oblivious
Double SlapLovely KissIce PunchPsychic
Even
Exeggutor
Lv 41
GrassPsychic
Chlorophyll
ReflectLeech SeedEgg BombPsychic
You Win
Slowbro
Lv 41
WaterPsychic
Oblivious
CurseAmnesiaBody SlamPsychic
You Win
Xatu
Lv 42
PsychicFlying
Synchronize
Quick AttackFuture SightConfuse RayPsychic
Koga
Elite Four
Good

Forretress has the type edge here and should clean up Koga's team.

Easy KO
Ariados
Lv 40
BugPoison
Swarm
Double TeamSpider WebBaton PassGiga Drain
You Win
Venomoth
Lv 41
BugPoison
Shield Dust
SupersonicGustPsychicToxic
Even
Forretress
Lv 43
BugSteel
Sturdy
ProtectSwiftExplosionSpikes
You Win
Muk
Lv 42
Poison
Stench
MinimizeAcid ArmorSludge BombToxic
You Win
Crobat
Lv 44
PoisonFlying
Inner Focus
Double TeamQuick AttackWing AttackToxic
Bruno
Elite Four
Even

Forretress trades roughly evenly with Bruno's team.

Even
Hitmontop
Lv 42
Fighting
Intimidate
PursuitQuick AttackDigDetect
Even
Hitmonlee
Lv 42
Fighting
Limber
SwaggerDouble KickHigh Jump KickForesight
Risky
Hitmonchan
Lv 42
Fighting
Keen Eye
Thunder PunchIce PunchFire PunchMach Punch
Easy KO
Onix
Lv 43
RockGround
Rock Head
BindEarthquakeSandstormRock Slide
Even
Machamp
Lv 46
Fighting
Guts
Rock SlideForesightVital ThrowCross Chop
Karen
Elite Four
Good

Forretress has the type edge here and should clean up Karen's team.

You Win
Umbreon
Lv 42
Dark
Synchronize
Sand AttackConfuse RayFeint AttackMean Look
You Win
Vileplume
Lv 42
GrassPoison
Chlorophyll
Stun SporeAcidMoonlightPetal Dance
Even
Gengar
Lv 45
GhostPoison
Cursed Body
LickSpiteCurseDestiny Bond
You Win
Murkrow
Lv 44
DarkFlying
Insomnia
Quick AttackWhirlwindPursuitFeint Attack
Even
Houndoom
Lv 47
DarkFire
Early Bird
RoarPursuitFlamethrowerCrunch
Lance
Champion
Good

Forretress has the type edge here and should clean up Lance's team.

You Win
Gyarados
Lv 44
WaterFlying
Intimidate
FlailRain DanceSurfHyper Beam
Even
Dragonite
Lv 47
DragonFlying
Inner Focus
Thunder WaveTwisterThunderHyper Beam
You Win
Dragonite
Lv 47
DragonFlying
Inner Focus
Thunder WaveTwisterBlizzardHyper Beam
You Win
Aerodactyl
Lv 46
RockFlying
Rock Head
Wing AttackAncient PowerRock SlideHyper Beam
You Win
Charizard
Lv 46
FireFlying
Blaze
FlamethrowerWing AttackSlashHyper Beam
Even
Dragonite
Lv 50
DragonFlying
Inner Focus
Fire BlastSafeguardOutrageHyper Beam

Catch Pineco

Available before Badge 1
Type
Bug
Tier
C

Catch Pineco on Route 29 (Headbutt (rare), Lv 10, common).

View Pineco locations

Evolve Pineco to Forretress

Level 31
Type
BugSteel
Tier
S

Pineco evolves into Forretress at Level 31. Your Pineco should hit Level 31 before you reach Jasmine, at typical leveling pace.

Recommended Moves

  • STARTING (Lv 31)
    • LV 31NormalSelf-DestructPower 200Accuracy 100%PP 5
    • LV 31NormalTake DownPower 90Accuracy 85%PP 20
  • After Morty
    • LV 39NormalExplosionPower 250Accuracy 100%PP 5
  • After Clair
    • TM22GrassSolar BeamPower 120Accuracy 100%PP 10Route 27
  • After Lt. Surge
    • LV 59NormalDouble-EdgePower 120Accuracy 100%PP 15

How to Get Forretress in Crystal

Forretress never shows up wild here. You raise a Headbutt-tree Pineco to level 31, the only road to the Steel-type since the evolved stage has no spawn of its own.

Catch Pineco at any of these 15 spots to eventually evolve into Forretress.

  1. 1
    Catch Pineco
  2. 2
    Evolve Forretressat Lv.31
Badge 1
Headbutt
Badge 2
Badge 3
Badge 4
Badge 5
Badge 6
Badge 7
Badge 8

How to Get Shiny Forretress in Crystal

Forretress armors up only through evolution; shake a shiny Pineco out of a tree first, then train it to level 31 to claim the shiny fortress. Compare Shiny Forretress odds across every game

Normal vs Shiny
Normal Forretress in CrystalNormal
Shiny Forretress in Crystal Shiny
Color ShiftPurpletoBrown
Shiny TierB Tier Shiny

Shiny Forretress Evolution

2 Forms
Showing shiny artworkView Full Evolution Chart

Crystal Shiny Forretress Calculator

2 Methods
Fastest Path

The best route is Breed w/ Shiny Parent, about 1 in 64 on each try.

Step 1 · Encounter Method2 in Crystal

Full Odds: Walk through grass, surf, or fish. Every encounter is its own independent shiny roll.

Breed w/ Shiny Parent: Eggs inherit stats from a shiny parent, so about 1 in 64 hatch shiny. A shiny Ditto helps every egg, and any other shiny parent (the red Gyarados works) helps only eggs of the opposite gender.

How many you have done, or plan to do.

120,000
Shiny Odds Per Try1 / 64Breed w/ Shiny Parent
Chance By Now50.8%at 45 eggs hatchedAbout 5 in 10 hunters have one by now
What To Expect
ChanceEncountersTime
10%lucky few7----
25%one in four19----
50%coin flip45----
90%very likely147----
How is this calculated?

Every encounter has the same shiny chance, the Shiny Odds Per Try shown above. Each one is a separate roll that does not care how many you have already done, so the more you hunt, the higher your overall chance of at least one shiny. The formula below turns your odds and your number of tries into that combined chance.

chance after N tries = 1 − (1 − p)^N,  where  p = 1 / odds per try

Example at 1 in 8,192 (classic full odds): about 864 encounters for a 10 percent chance, 5,678 for 50 percent, and 18,862 for 90 percent.

The table above flips that around: it shows how many encounters it takes to reach a 10, 25, 50, and 90 percent chance at your current odds. Turning on boosts like the Shiny Charm, sandwiches, or chains improves your odds, so the encounter numbers drop.

These are estimates, not promises. Most games have no pity counter, meaning no guaranteed shiny no matter how many you hunt, so even Very Likely is not guaranteed: some hunters find one early, others go well past that point.

Where these shiny odds come from: Read our full methodology

For time estimates and charm math, open the Crystal shiny odds calculator with Forretress already selected.

Forretress Weakness

Fire moves hit Forretress for super-effective damage. Fire hits land at 4x, so they're the biggest threat. The upside? Poison-type moves can't touch it at all. With 9 resistances, the defensive profile is strong. Forretress's physical bulk (base 140 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.

Forretress Weakness and Resistance Chart
DamageTypes
4x (Critical)Fire
0.5x (Resist)Normal, Ice, Psychic, Bug, Ghost, Dragon, Dark, Steel
0.25x (Resist)Grass
0x (Immune)Poison
Gen II Type Chart
  • Dark and Steel types added — Fairy does not exist yet
  • Moves are Physical or Special based on type, not per move
  • Special stat split into Sp.Atk and Sp.Def

What is Forretress Weak Against

Fortress
1Weak
9Resist
1Immune
Score+9
4xCritical
2xWeak
None
¼xResist
0xImmune

What is Forretress Strong Against

5Strong
2Resisted
0Immune
Score+3
½xResisted
0xImmune
None

Best Pokemon Against Forretress

Ho-Oh
Ho-Oh
FireFlying
S
Entei
Entei
Fire
B
B
B
Magmar
Magmar
Fire
C

Forretress Evolutions

Evolved from Pineco. Forretress is the final form in this two-stage line. A decent partner pool for breeding via one egg group. Eggs take an average time to hatch. Defense grew the most through evolution (+50 over Pineco), and Forretress peaks at 465 total stats. View every chain in the Evolution Chart.

How to Evolve

2 Forms
Stat Comparison 2 Stages
Forretress
BugSteel
HP
50
75+25
ATK
65
90+25
DEF
90
140+50
SP.ATK
35
60+25
SP.DEF
35
60+25
SPE
15
40+25
BST
290C-Tier
465S-Tier+175
ROLE
Balanced
Trick Room
TYPE
Physical
Physical

Breeding

Very Easy

Breed with Forretress to get Pineco eggs easily using 23 partners from the Bug egg group. Notable egg moves include Flail, Pin Missile, Reflect and 1 more.

Egg Groups
Bug
Gender
♂50.0%♀50.0%
Hatch Time
20 cycles·5,140 steps
Quick~5 min with Flame Body
Egg Moves
4moves
Breed With (best first)
parasectparasshucklevenomothgligarariadosbutterfreebeedrillledianyanmavenonatscyther

C Forretress Best Moveset

Steel/Bug resists an enormous number of types. MoveSpikes and MoveRapid Spin provide both sides of the hazard game, setting your own and clearing the opponent's. MoveExplosion closes with massive damage. Held ItemLeftovers sustains. The complete hazard package with the typing to switch in safely and do the job.

Best Build

Experimental
Support
Ability
Unknown
Item
LeftoversSUSTAIN
Best Nature for Forretress
HardyNEUTRAL

Support Moveset

  • SpikesHazard
  • ExplosionCoverage
  • Rapid Spin
  • ToxicUtility

Moves List

Without breeding, Forretress misses out on Flail and Pin Missile. That's 4 egg moves adding depth that the base kit lacks. STAB comes from Pin Missile, with Normal and Grass coverage and more rounding things out.

Level-Up Moves

Lv 1
Protect+4
C——10Normal
Lv 1
Self-Destruct
B2001005Normal
Lv 1
Tackle
D3510035Normal
Lv 8
Self-Destruct
B2001005Normal
Lv 15
Take Down
C908520Normal
Lv 22
Rapid Spin
B5010040Normal
Lv 29
Bide+1
———10Normal
Lv 39
Explosion
B2501005Normal
Lv 49
Spikes
B——20Ground
Lv 59
Double-Edge
C12010015Normal

TM Moves

18 of 24 TMs are obtainable before the Elite Four

TM
TM45D—10015Normal
TM40
Defense CurlMt. Mortarnot until badge 8
D——40Normal
TM32———15Normal
TM20
Endure+4Burned Towerbadge 4
D——10Normal
TM19A751005Grass
TM02C7010015Normal
TM10D6010015Normal
TM15C150905Normal
TM17C——10Normal
TM44
RestIce Pathnot until badge 7
C——10Psychic
TM08
Rock SmashRoute 36badge 3
D2010015Fighting
TM04
RolloutRoute 35badge 2
D309020Rock
TM37
SandstormRoute 27not until badge 8
D——10Rock
TM13
SnoreMoomoo Farmbadge 3
—4010015Normal
TM22
Solar BeamRoute 27not until badge 8
C12010010Grass
HM04
StrengthOlivine Citybadge 4
C8010015Normal
TM11C——5Fire
TM34
SwaggerOlivine Lighthousebadge 4
C—8515Normal
TM12——10020Normal
TM06B—8510Poison

Egg Moves

Egg
Egg
Flail
D—10015Normal
Egg
Pin Missile
—219520Bug
Egg
Reflect
C——20Psychic
Egg
Swift
D60—20Normal

Tutor Moves

Forretress can't learn any Tutor moves

Base Stats

Base Stats
Above
HP75
C
Attack90
B
Defense140
A
Sp. Atk60
C
Sp. Def60
C
Speed40
D
Total465
Details
Catch Rate
Challenging75 / 255
Growth Rate
Medium Fast1M XP
Height1.2 m
Weight125.8 kg
Base XP163
EV Yield
HPAtkDef+2SpASpDSpe
Defense training target
Pokedex Entry

Usually found hanging on to a fat tree trunk. It shoots out bits of its shell when it sees action.

Pokemon Crystal

Forretress Crystal Guide

  • In Crystal, use Forretress as a hazard setter. Physical side carries the damage. It's slow, so Trick Room or priority moves are key.

Game Availability

Available in 16 titles since its debut in Gold & Silver, Forretress spans 8 generations of Pokemon games. It's accessible through wild encounters in most mainline games.

Explore

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