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#0205 · Generation II

Forretress

Bug / Steel · Bagworm Pokémon — first seen in Generation II.

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

Base stats

StatBaseMinMax
HP75
260354
Attack90
166306
Defense140
256416
Sp. Attack60
112240
Sp. Defense60
112240
Speed40
76196
Total465

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 Forretress takes from each attacking type.

×4
Fire
×½
NormalBugSteelPsychicIceDragonFairy
×¼
Grass
×0
Poison
×1
FightingFlyingGroundRockGhostWaterElectricDark

Evolution

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 Moon27 level-up · 32 TM/HM · 14 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
—Mirror ShotSteelSpecial6585%10
—AutotomizeSteelStatus——15
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Zap CannonElectricSpecial12050%5
1Toxic SpikesPoisonStatus——20
1Magnet RiseElectricStatus——10
1Mirror ShotSteelSpecial6585%10
1Bug BiteBugPhysical60100%20
1AutotomizeSteelStatus——15
1Heavy SlamSteelPhysical—100%10
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
32PaybackDarkPhysical50100%10
36ExplosionNormalPhysical250100%5
42Iron DefenseSteelStatus——15
46Gyro BallSteelPhysical—100%5
50Double-EdgeNormalPhysical120100%15
56Magnet RiseElectricStatus——10
60Zap CannonElectricSpecial12050%5
64Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
Giga DrainGrassSpecial75100%10
Pain SplitNormalStatus——20
Signal BeamBugSpecial75100%15
Iron DefenseSteelStatus——15
BlockNormalStatus——5
GravityPsychicStatus——5
Magnet RiseElectricStatus——10
Stealth RockRockStatus——20
Bug BiteBugPhysical60100%20
TelekinesisPsychicStatus——15
Ally SwitchPsychicStatus——15
Drill RunGroundPhysical8095%10
Laser FocusNormalStatus——30
Sun / Moon27 level-up · 32 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
—Mirror ShotSteelSpecial6585%10
—AutotomizeSteelStatus——15
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Zap CannonElectricSpecial12050%5
1Toxic SpikesPoisonStatus——20
1Magnet RiseElectricStatus——10
1Mirror ShotSteelSpecial6585%10
1Bug BiteBugPhysical60100%20
1AutotomizeSteelStatus——15
1Heavy SlamSteelPhysical—100%10
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
32PaybackDarkPhysical50100%10
36ExplosionNormalPhysical250100%5
42Iron DefenseSteelStatus——15
46Gyro BallSteelPhysical—100%5
50Double-EdgeNormalPhysical120100%15
56Magnet RiseElectricStatus——10
60Zap CannonElectricSpecial12050%5
64Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
Omega Ruby / Alpha Sapphire23 level-up · 37 TM/HM · 11 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Zap CannonElectricSpecial12050%5
1Toxic SpikesPoisonStatus——20
1Magnet RiseElectricStatus——10
1Bug BiteBugPhysical60100%20
1Heavy SlamSteelPhysical—100%10
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
32AutotomizeSteelStatus——15
36PaybackDarkPhysical50100%10
42ExplosionNormalPhysical250100%5
46Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
56Double-EdgeNormalPhysical120100%15
60Magnet RiseElectricStatus——10
64Zap CannonElectricSpecial12050%5
70Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM76Struggle BugBugSpecial50100%20
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
TM94Secret PowerNormalPhysical70100%20
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
Giga DrainGrassSpecial75100%10
Pain SplitNormalStatus——20
Signal BeamBugSpecial75100%15
Iron DefenseSteelStatus——15
BlockNormalStatus——5
GravityPsychicStatus——5
Magnet RiseElectricStatus——10
Stealth RockRockStatus——20
Bug BiteBugPhysical60100%20
Drill RunGroundPhysical8095%10
X / Y23 level-up · 36 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Zap CannonElectricSpecial12050%5
1Toxic SpikesPoisonStatus——20
1Magnet RiseElectricStatus——10
1Bug BiteBugPhysical60100%20
1Heavy SlamSteelPhysical—100%10
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
32AutotomizeSteelStatus——15
36PaybackDarkPhysical50100%10
42ExplosionNormalPhysical250100%5
46Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
56Double-EdgeNormalPhysical120100%15
60Magnet RiseElectricStatus——10
64Zap CannonElectricSpecial12050%5
70Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM100ConfideNormalStatus——20
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM76Struggle BugBugSpecial50100%20
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM88Sleep TalkNormalStatus——10
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
TM94Rock SmashFightingPhysical40100%15
HM04StrengthNormalPhysical80100%15
Black 2 / White 222 level-up · 34 TM/HM · 12 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Toxic SpikesPoisonStatus——20
1Bug BiteBugPhysical60100%20
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
32AutotomizeSteelStatus——15
36PaybackDarkPhysical50100%10
42ExplosionNormalPhysical250100%5
46Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
56Double-EdgeNormalPhysical120100%15
60Magnet RiseElectricStatus——10
64Zap CannonElectricSpecial12050%5
70Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM76Struggle BugBugSpecial50100%20
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
TM94Rock SmashFightingPhysical40100%15
HM04StrengthNormalPhysical80100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
Giga DrainGrassSpecial75100%10
Sleep TalkNormalStatus——10
Pain SplitNormalStatus——20
Signal BeamBugSpecial75100%15
Iron DefenseSteelStatus——15
BlockNormalStatus——5
GravityPsychicStatus——5
Magnet RiseElectricStatus——10
Stealth RockRockStatus——20
Bug BiteBugPhysical60100%20
Drill RunGroundPhysical8095%10
Black / White22 level-up · 34 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Toxic SpikesPoisonStatus——20
1Bug BiteBugPhysical60100%20
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
32AutotomizeSteelStatus——15
36PaybackDarkPhysical50100%10
42ExplosionNormalPhysical250100%5
46Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
56Double-EdgeNormalPhysical120100%15
60Magnet RiseElectricStatus——10
64Zap CannonElectricSpecial12050%5
70Heavy SlamSteelPhysical—100%10

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM09VenoshockPoisonSpecial65100%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM48RoundNormalSpecial60100%15
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM72Volt SwitchElectricSpecial70100%20
TM74Gyro BallSteelPhysical—100%5
TM76Struggle BugBugSpecial50100%20
TM78BulldozeGroundPhysical60100%20
TM80Rock SlideRockPhysical7590%10
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
TM94Rock SmashFightingPhysical40100%15
HM04StrengthNormalPhysical80100%15
HeartGold / SoulSilver20 level-up · 36 TM/HM · 11 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Toxic SpikesPoisonStatus——20
1Bug BiteBugPhysical60100%20
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
33PaybackDarkPhysical50100%10
38ExplosionNormalPhysical250100%5
45Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
55Double-EdgeNormalPhysical120100%15
62Magnet RiseElectricStatus——10
67Zap CannonElectricSpecial12050%5

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM58EndureNormalStatus——10
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM74Gyro BallSteelPhysical—100%5
TM76Stealth RockRockStatus——20
TM78CaptivateNormalStatus—100%20
TM80Rock SlideRockPhysical7590%10
TM82Sleep TalkNormalStatus——10
TM83Natural GiftNormalPhysical—100%15
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
HeadbuttNormalPhysical70100%15
String ShotBugStatus—95%40
SnoreNormalSpecial50100%15
RolloutRockPhysical3090%20
Pain SplitNormalStatus——20
Signal BeamBugSpecial75100%15
Iron DefenseSteelStatus——15
BlockNormalStatus——5
GravityPsychicStatus——5
Magnet RiseElectricStatus——10
Bug BiteBugPhysical60100%20
Platinum20 level-up · 36 TM/HM · 5 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Toxic SpikesPoisonStatus——20
1Bug BiteBugPhysical60100%20
6SelfdestructNormalPhysical200100%5
9Bug BiteBugPhysical60100%20
12Take DownNormalPhysical9085%20
17Rapid SpinNormalPhysical50100%40
20BideNormalPhysical——10
23Natural GiftNormalPhysical—100%15
28SpikesGroundStatus——20
31Mirror ShotSteelSpecial6585%10
33PaybackDarkPhysical50100%10
38ExplosionNormalPhysical250100%5
45Iron DefenseSteelStatus——15
50Gyro BallSteelPhysical—100%5
55Double-EdgeNormalPhysical120100%15
62Magnet RiseElectricStatus——10
67Zap CannonElectricSpecial12050%5

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM58EndureNormalStatus——10
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM74Gyro BallSteelPhysical—100%5
TM76Stealth RockRockStatus——20
TM78CaptivateNormalStatus—100%20
TM80Rock SlideRockPhysical7590%10
TM82Sleep TalkNormalStatus——10
TM83Natural GiftNormalPhysical—100%15
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
SnoreNormalSpecial50100%15
RolloutRockPhysical3090%20
Signal BeamBugSpecial75100%15
Iron DefenseSteelStatus——15
Magnet RiseElectricStatus——10
Diamond / Pearl19 level-up · 36 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1Take DownNormalPhysical9085%20
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
1Toxic SpikesPoisonStatus——20
6SelfdestructNormalPhysical200100%5
9Take DownNormalPhysical9085%20
12Rapid SpinNormalPhysical50100%40
17BideNormalPhysical——10
20Natural GiftNormalPhysical—100%15
23SpikesGroundStatus——20
28PaybackDarkPhysical50100%10
31Mirror ShotSteelSpecial6585%10
33ExplosionNormalPhysical250100%5
38Iron DefenseSteelStatus——15
45Gyro BallSteelPhysical—100%5
50Double-EdgeNormalPhysical120100%15
57Magnet RiseElectricStatus——10
62Zap CannonElectricSpecial12050%5

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM39Rock TombRockPhysical6095%15
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
TM58EndureNormalStatus——10
TM64ExplosionNormalPhysical250100%5
TM66PaybackDarkPhysical50100%10
TM68Giga ImpactNormalPhysical15090%5
TM69Rock PolishRockStatus——20
TM74Gyro BallSteelPhysical—100%5
TM76Stealth RockRockStatus——20
TM78CaptivateNormalStatus—100%20
TM80Rock SlideRockPhysical7590%10
TM82Sleep TalkNormalStatus——10
TM83Natural GiftNormalPhysical—100%15
TM87SwaggerNormalStatus—85%15
TM90SubstituteNormalStatus——10
TM91Flash CannonSteelSpecial80100%10
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15
FireRed / LeafGreen11 level-up · 21 TM/HM · 7 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
8SelfdestructNormalPhysical200100%5
15Take DownNormalPhysical9085%20
22Rapid SpinNormalPhysical50100%40
29BideNormalPhysical——10
31Zap CannonElectricSpecial12050%5
39ExplosionNormalPhysical250100%5
49SpikesGroundStatus——20
59Double-EdgeNormalPhysical120100%15

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
Body SlamNormalPhysical85100%15
Double-EdgeNormalPhysical120100%15
CounterFightingPhysical—100%20
MimicNormalStatus——10
ExplosionNormalPhysical250100%5
Rock SlideRockPhysical7590%10
SubstituteNormalStatus——10
Emerald10 level-up · 21 TM/HM · 13 tutor

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
8SelfdestructNormalPhysical200100%5
15Take DownNormalPhysical9085%20
22Rapid SpinNormalPhysical50100%40
29BideNormalPhysical——10
39ExplosionNormalPhysical250100%5
49SpikesGroundStatus——20
59Double-EdgeNormalPhysical120100%15

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15

Move tutor

MoveTypeCat.PowerAcc.PP
Body SlamNormalPhysical85100%15
Double-EdgeNormalPhysical120100%15
CounterFightingPhysical—100%20
MimicNormalStatus——10
Defense CurlNormalStatus——40
ExplosionNormalPhysical250100%5
Rock SlideRockPhysical7590%10
SubstituteNormalStatus——10
SnoreNormalSpecial50100%15
EndureNormalStatus——10
RolloutRockPhysical3090%20
SwaggerNormalStatus—85%15
Sleep TalkNormalStatus——10
Ruby / Sapphire10 level-up · 21 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
8SelfdestructNormalPhysical200100%5
15Take DownNormalPhysical9085%20
22Rapid SpinNormalPhysical50100%40
29BideNormalPhysical——10
39ExplosionNormalPhysical250100%5
49SpikesGroundStatus——20
59Double-EdgeNormalPhysical120100%15

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM06ToxicPoisonStatus—90%10
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM15Hyper BeamNormalSpecial15090%5
TM16Light ScreenPsychicStatus——30
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM26EarthquakeGroundPhysical100100%10
TM27ReturnNormalPhysical—100%20
TM28DigGroundPhysical80100%10
TM32Double TeamNormalStatus——15
TM33ReflectPsychicStatus——20
TM37SandstormRockStatus——10
TM42FacadeNormalPhysical70100%20
TM43Secret PowerNormalPhysical70100%20
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
HM04StrengthNormalPhysical80100%15
HM06Rock SmashFightingPhysical40100%15
Crystal10 level-up · 24 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
8SelfdestructNormalPhysical200100%5
15Take DownNormalPhysical9085%20
22Rapid SpinNormalPhysical50100%40
29BideNormalPhysical——10
39ExplosionNormalPhysical250100%5
49SpikesGroundStatus——20
59Double-EdgeNormalPhysical120100%15

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM02HeadbuttNormalPhysical70100%15
TM03CurseGhostStatus——10
TM04RolloutRockPhysical3090%20
TM06ToxicPoisonStatus—90%10
TM08Rock SmashFightingPhysical40100%15
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM12Sweet ScentNormalStatus—100%20
TM13SnoreNormalSpecial50100%15
TM15Hyper BeamNormalSpecial15090%5
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM20EndureNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM34SwaggerNormalStatus—85%15
TM35Sleep TalkNormalStatus——10
TM37SandstormRockStatus——10
TM40Defense CurlNormalStatus——40
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
HM04StrengthNormalPhysical80100%15
Gold / Silver10 level-up · 24 TM/HM

Level-up

LvMoveTypeCat.PowerAcc.PP
1TackleNormalPhysical40100%35
1SelfdestructNormalPhysical200100%5
1ProtectNormalStatus——10
8SelfdestructNormalPhysical200100%5
15Take DownNormalPhysical9085%20
22Rapid SpinNormalPhysical50100%40
29BideNormalPhysical——10
39ExplosionNormalPhysical250100%5
49SpikesGroundStatus——20
59Double-EdgeNormalPhysical120100%15

TM & HM

TMMoveTypeCat.PowerAcc.PP
TM02HeadbuttNormalPhysical70100%15
TM03CurseGhostStatus——10
TM04RolloutRockPhysical3090%20
TM06ToxicPoisonStatus—90%10
TM08Rock SmashFightingPhysical40100%15
TM10Hidden PowerNormalSpecial60100%15
TM11Sunny DayFireStatus——5
TM12Sweet ScentNormalStatus—100%20
TM13SnoreNormalSpecial50100%15
TM15Hyper BeamNormalSpecial15090%5
TM17ProtectNormalStatus——10
TM19Giga DrainGrassSpecial75100%10
TM20EndureNormalStatus——10
TM21FrustrationNormalPhysical—100%20
TM22Solar BeamGrassSpecial120100%10
TM27ReturnNormalPhysical—100%20
TM32Double TeamNormalStatus——15
TM34SwaggerNormalStatus—85%15
TM35Sleep TalkNormalStatus——10
TM37SandstormRockStatus——10
TM40Defense CurlNormalStatus——40
TM44RestPsychicStatus——5
TM45AttractNormalStatus—100%15
HM04StrengthNormalPhysical80100%15

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

Where to find it in the ROM hacks

26 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.

GuideWhere
Emerald Rogue
Field 1 — HoennSteel-theme rooms · Lv —
Forest 0 — HoennBug-theme rooms · Lv —
Urban 0 — HoennSteel-theme rooms · Lv —
and 9 more areas
Pokémon Heart & Soul
Mt. SilverRock Smash · Lv 40 · 60%
Route 28Rock Smash · Lv 40 · 60%
Route 50Rock Smash · Lv 45-60 · 30%
Infinite Fusion
Route 15Rock Smash (Remix) · Lv 27-28 · 15%
Safari Zone Area 3Grass (Morning) (Remix) · Lv 23 · 14%
Safari Zone Area 3Grass (Night) (Remix) · Lv 25 · 5%rare
and 7 more areas
Sword and Shield Ultimate Plus
Isle Of Armor 2Grass · Lv 40-50 · 5%
Blaze Black 2 Redux & Volt White 2 Redux
Victory Road - ForestGrass · Lv 59-62 · 5%rare
Victory Road - ForestDoubles Grass · Lv 60-65 · 5%rare
Pokémon Phoenix Red
Route 9Grass · Lv 24 · 10%
Route 17 (Cycling Road)Grass · Lv 31 · 10%
Route 12Grass · Lv 31 · 10%
and 1 more area
Radical Red
Route 16Grass (Night) · Lv 36-38 · 20%
Elite Redux
Safari Zone NortheastGrass · Lv — · 10%
Pokémon GS Chronicles
Victory Road (Swamp)Wild · Lv —
Pokémon Emerald Kaizo
Safari Zone SouthGrass · Lv 50 · 5%rare
Inclement Emerald
Safari ZoneGrass · Lv Scales · 10%
Renegade Platinum
Fuego IronworksMorning · Lv 36-40 · 15%
Fuego IronworksDay · Lv 36-40 · 15%
Fuego IronworksNight · Lv 36-40 · 15%
and 2 more areas
Pokémon Platinum Kaizo
Snowpoint TempleGrass · Lv 75 · 10%
Distortion World Area 2Grass · Lv 100 · 5%
Pokémon Polished Crystal
Noisy ForestHeadbutt · Lv Base+2 · 5%rare
Noisy ForestHeadbutt (rare tree) · Lv Base+3 · 10%
Blaze Black 2 & Volt White 2
Victory Road - ForestGrass · Lv 58 · 5%rare
Victory Road - ForestDoubles Grass · Lv 62 · 5%rare
Pokémon SoothingSilver
Special encountersTrade · Lv ?
Pokémon Definitive Platinum
Route 229Grass · Lv 62 · 10%
Rising Ruby & Sinking Sapphire
Route 123Tall Grass · Lv 45
Fire Red Omega
Pattern BushGrass · Lv —
Pokémon FireRed Deluxe
Cerulean Cave 1FGrass · Lv 52-61 · 11%
Pokémon Platinum Redux
Veilstone CityGrass · Lv ? · 15%
Great MarshPalmer · Lv ?
Pokémon Saiph 2
Union RoadGrass · Lv 39-44 · 5%
School RoadGrass · Lv 46-51 · 10%
Pokémon Black Pearl Emerald
Desert UnderpassGrass · Lv 38-44 · 4%rare
Pokémon Project Nova
Emerald CityGrass · Lv 33 · 35%
Fuchsia CityGrass · Lv 52 · 30%
Pokémon Mirror Gold
Rock Tunnel 1FGrass (Morning / Day) · Lv 59 · 10%
Pokémon Timeless Diamond & Spaceless Pearl
Route 216Honey Tree · Lv 36-39 · 10%
Route 229Honey Tree · Lv 55-58 · 15%
Unboundnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon R.O.W.Enot in the wild in this guide's tables — evolve, trade or battle it
Celia's Stupid Romhacknot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Odysseynot in the wild in this guide's tables — evolve, trade or battle it
Pokémon FireRed & LeafGreen+not in the wild in this guide's tables — evolve, trade or battle it
Pokémon Aesthetic Rednot in the wild in this guide's tables — evolve, trade or battle it
Pokemon Modern Emeraldnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crystal Inheritancenot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crippling Medical Debt Editionnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Exnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Valiantnot in the wild in this guide's tables — evolve, trade or battle it
Gaianot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Imperiumnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon: Wishes of Tomorrownot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Exceedednot in the wild in this guide's tables — evolve, trade or battle it
Pokémon WaveBluenot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Hoenn's Last Wishnot in the wild in this guide's tables — evolve, trade or battle it
Low Budget Crystalnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Squarednot in the wild in this guide's tables — evolve, trade or battle it
Pokémon FireRed Reignited & LeafGreen Regrownnot in the wild in this guide's tables — evolve, trade or battle it
Sacred Gold & Storm Silvernot in the wild in this guide's tables — evolve, trade or battle it
Blaze Black & Volt Whitenot in the wild in this guide's tables — evolve, trade or battle it
Pokémon FireRed: Rocket Editionnot in the wild in this guide's tables — evolve, trade or battle it
Pokemon Prismnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Peridot Versionnot in the wild in this guide's tables — evolve, trade or battle it
HeartGold Generationsnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Sour Crystalnot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Overcomplicatednot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Rule-ettenot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Crystal Legacynot in the wild in this guide's tables — evolve, trade or battle it
Pokémon Emerald Seaglassnot in the wild in this guide's tables — evolve, trade or battle it

Compare official Forretress with the ROM hacks →

In the 57 guides that include it

Changed in 29 of 57 guides: stats in 11, abilities in 23.

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

GuideTypeTotalAbilities
Celia's Stupid RomhackChangedBugSteel465Sturdy
Pokémon OdysseyChangedBugSteel500 +35
+10 HP, +5 Attack, +20 Speed
Sturdy, Skill Link
+ Skill Link − Overcoat
Blaze Black 2 Redux & Volt White 2 ReduxChangedBugSteel465Sturdy, Overcoat, Overcoat
Pokémon Phoenix RedChangedBugSteel500 +35
+10 HP, +15 Attack, -15 Defense, -10 Sp. Atk, +20 Sp. Def, +15 Speed
Shell Armor, Rough Skin
+ Shell Armor, Rough Skin − Sturdy, Overcoat
Elite ReduxChangedBugSteel475 +10
+10 Attack, +20 Sp. Def, -20 Speed
Aftermath, Fort Knox, Stamina
Pokémon GS ChroniclesChangedBugSteel480 +15
-15 Sp. Atk, +30 Sp. Def
Sturdy, Overcoat
Pokémon Emerald KaizoChangedBugSteel465Shell Armor, Sturdy
+ Shell Armor − Overcoat
Renegade PlatinumChangedBugSteel465Sturdy
− Overcoat
Pokémon FireRed & LeafGreen+ChangedBugSteel465Sturdy
− Overcoat
Pokémon Aesthetic RedChangedBugSteel465Rough Skin, Sturdy
+ Rough Skin − Overcoat
Pokemon Modern EmeraldChangedBugSteel465Sturdy
Pokémon Crippling Medical Debt EditionChanged0 -465
-75 HP, -90 Attack, -140 Defense, -60 Sp. Atk, -60 Sp. Def, -40 Speed
—
Pokémon Platinum KaizoChangedBugSteel495 +30
+30 Sp. Def
Heatproof
+ Heatproof − Sturdy, Overcoat
Low Budget CrystalChangedBugSteel465Debris
+ Debris − Sturdy, Overcoat
Pokémon FireRed Reignited & LeafGreen RegrownChangedBugSteel465Sturdy
− Overcoat
Sacred Gold & Storm SilverChangedBugSteel465Sturdy
− Overcoat
Blaze Black 2 & Volt White 2ChangedBugSteel465Sturdy, Overcoat, Overcoat
Pokémon SoothingSilverChangedBugSteel465Sturdy, Battle Armor
+ Battle Armor − Overcoat
Rising Ruby & Sinking SapphireChangedBugSteel465Sturdy, Overcoat, Overcoat
Blaze Black & Volt WhiteChangedBugSteel465Sturdy, Overcoat, Overcoat
Fire Red OmegaChangedBugSteel465Sturdy
− Overcoat
Pokémon FireRed: Rocket EditionChangedBugSteel465
-20 Sp. Atk, +20 Speed
Sturdy, Overcoat
Pokemon PrismChangedBugSteel465Sturdy
− Overcoat
Pokémon FireRed DeluxeChangedBugSteel515 +50
+20 Attack, +30 Sp. Def
Shell Armor
+ Shell Armor − Sturdy, Overcoat
Pokémon Platinum ReduxChangedBugSteel534 +69
+15 HP, -5 Attack, +5 Defense, +15 Sp. Atk, +25 Sp. Def, +14 Speed
Effect Spore, Shield Dust
+ Effect Spore, Shield Dust − Sturdy, Overcoat
Pokémon Saiph 2Changed0 -465
-75 HP, -90 Attack, -140 Defense, -60 Sp. Atk, -60 Sp. Def, -40 Speed
—
Pokémon Project NovaChangedBugSteel465Sturdy, Battle Armor
+ Battle Armor − Overcoat
Pokémon Mirror GoldChangedBugSteel530 +65
+20 HP, +30 Sp. Atk, +20 Sp. Def, -5 Speed
Sturdy, Overcoat
Pokémon Timeless Diamond & Spaceless PearlChangedBugSteel465Sturdy
− Overcoat
UnboundUnchangedBugSteel465Sturdy, Overcoat
Emerald RogueUnchangedBugSteel465Sturdy, Overcoat
Pokémon Heart & SoulUnchangedBugSteel465Sturdy, Overcoat
Infinite FusionUnchangedBugSteel465Sturdy, Overcoat
Pokémon R.O.W.EUnchangedBugSteel465Sturdy, Overcoat
Sword and Shield Ultimate PlusUnchangedBugSteel465Sturdy, Overcoat
Radical RedUnchangedBugSteel465Sturdy, Overcoat
Inclement EmeraldUnchangedBugSteel465Sturdy, Overcoat
Pokémon Crystal InheritanceUnchangedBugSteel465Sturdy, Overcoat
Pokémon Emerald ExUnchangedBugSteel465—
Pokémon ValiantUnchangedBugSteel465Sturdy, Overcoat
GaiaUnchangedBugSteel465Sturdy, Overcoat
Pokémon Emerald ImperiumUnchangedBugSteel465Sturdy, Overcoat
Pokémon: Wishes of TomorrowUnchangedBugSteel465Sturdy, Overcoat
Pokémon ExceededUnchangedBugSteel465Sturdy, Metamorphosis, Fortitude
Pokémon WaveBlueUnchangedBugSteel465Sturdy, Overcoat
Pokémon Hoenn's Last WishUnchangedBugSteel465Sturdy, Overcoat
Pokémon Emerald SquaredUnchangedBugSteel465Sturdy, Overcoat
Pokémon Polished CrystalUnchangedBugSteel465Sturdy, Overcoat
Pokémon Definitive PlatinumUnchangedBugSteel465Sturdy, Overcoat
Pokémon Peridot VersionUnchangedBugSteel465—
HeartGold GenerationsUnchangedBugSteel465Sturdy, Overcoat
Pokémon Sour CrystalUnchangedBugSteel465—
Pokémon Black Pearl EmeraldUnchangedBugSteel465Sturdy, Overcoat
Pokémon OvercomplicatedUnchangedBugSteel465Iron Barbs, Scrappy, Oblivious
Pokémon Emerald Rule-etteUnchangedBugSteel465Sturdy, Overcoat
Pokémon Crystal LegacyUnchangedBugSteel465—
Pokémon Emerald SeaglassUnchangedBugSteel465Sturdy, Overcoat

Pokédex entries

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

GoldIts entire body is shielded by a steel-hard shell. What lurks inside the armor is a total mystery.
SilverIt remains immova­ bly rooted to its tree. It scatters pieces of its hard shell to drive its enemies away.
CrystalUsually found hanging on to a fat tree trunk. It shoots out bits of its shell when it sees action.
Ruby / SapphireFORRETRESS conceals itself inside its hardened steel shell. The shell is opened when the POKéMON is catching prey, but it does so at such a quick pace that the shell’s inside cannot be seen.
EmeraldIt keeps itself inside its steel shell. The shell is opened when it is catching prey, but it is so quick that the shell’s inside cannot be seen.
FireRed / SoulSilver / YIt remains immovably rooted to its tree. It scatters pieces of its hard shell to drive its enemies away.
LeafGreenIts entire body is shielded by a steel- hard shell. What lurks inside the armor is a total mystery.
Diamond / Pearl / Platinum / Black / White / Black 2 / White 2 / XIt is encased in a steel shell. Its peering eyes are all that can be seen of its mysterious innards.
HeartGoldIts entire body is shielded by a steel-hard shell. What lurks inside this shell is a total mystery.
Omega Ruby / Alpha SapphireForretress conceals itself inside its hardened steel shell. The shell is opened when the Pokémon is catching prey, but it does so at such a quick pace that the shell’s inside cannot be seen.
Ultra SunWhen something approaches it, it fires off fragments of its steel shell in attack. This is not a conscious action but a conditioned reflex.
Ultra MoonIn the moment that it gulps down its prey, the inside of its shell is exposed, but to this day, no one has ever seen that sight.

Names in other languages

Japaneseフォレトス
Japanese (Rōmaji)Foretos
GermanForstellka
FrenchForetress
SpanishForretress
ItalianForretress
Korean쏘콘
Chinese (Simplified)佛烈托斯
Chinese (Traditional)佛烈托斯

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.