Edition differences: original GBA and Nintendo Switch (2026)
Battle data describes Generation III rules. Availability notes distinguish native catches, evolution and breeding from original GBA imports. GBA games can trade with compatible Generation III games after the network quest; Switch supports local FireRed/LeafGreen trading and cannot import Pokémon from other games. Transfers to Pokémon HOME are one way.
GBA: AuroraTicket and MysticTicket required historical event distributions. Switch: both tickets are added after entering the Hall of Fame, providing access to Deoxys on Birth Island and Lugia/Ho-Oh on Navel Rock. Other event Pokémon and GBA imports are not made available by these tickets.
Original GBA: a roaming Entei or Raikou that successfully ends an encounter with Roar disappears permanently because of a game bug. The Switch editions fix this Roar disappearance bug.
Forretress
#205 in the National Pokédex • Bagworm Pokémon
Pokédex entries
FireRed
It remains immovably rooted to its tree. It scatters pieces of its hard shell to drive its enemies away.
LeafGreen
Its entire body is shielded by a steel-hard shell. What lurks inside the armor is a total mystery.
Details
Types
Category
Ability
Height
Weight
National Pokédex
Stats
Min
Max
HP
75
260
354
Attack
90
166
306
Defense
140
256
416
Sp. Atk
60
112
240
Sp. Def
60
112
240
Speed
40
76
196
Total
465
Ranges are for Level 100. Max assumes a beneficial nature, 252 EVs, and 31 IVs; min assumes a hindering nature, 0 EVs, and 0 IVs.
Game availability
GBA: requires importing from another Generation III game.Switch: unavailable. This page documents the supported Generation III Pokémon.
Growth
| EV yield | 2 Def |
|---|---|
| Catch rate | 75 |
| Base Exp. | 118 |
Eggs
| Egg groups | |
|---|---|
| Gender | 50% male 50% female |
| Egg cycles | 20 (5,375 steps) |
Evolution
| Pokémon | Requires | Evolution |
|---|---|---|
 Pineco #204 | Level 31 This line requires importing Pokémon from another Generation III game on GBA; unavailable on Switch. Requires the National Pokédex. |  Forretress #205 |
Moves
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| Start | Tackle |  |  Physical | 35 | 95 | 35 | A physical attack in which the user charges, full body, into the foe. |
| Start | Self-Destruct | | Physical | 200 | 100 | 5 | The user blows up to inflict severe damage, even making itself faint. |
| Start | Protect | |  Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| 8 | Self-Destruct | | Physical | 200 | 100 | 5 | The user blows up to inflict severe damage, even making itself faint. |
| 15 | Take Down | | Physical | 90 | 85 | 20 | A reckless, full-body charge attack that also hurts the user a little. |
| 22 | Rapid Spin | | Physical | 20 | 100 | 40 | An attack that frees the user from BIND, WRAP, LEECH SEED, and SPIKES. |
| 29 | Bide | | Physical | - | - | 10 | The user endures attacks for two turns, then strikes back double. |
| 31 | Zap Cannon |  |  Special | 100 | 50 | 5 | An electric blast is fired like a cannon to inflict damage and paralyze. |
| 39 | Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| 49 | Spikes |  | Status | - | - | 20 | A trap of spikes is laid around the foe’s party to hurt foes switching in. |
| 59 | Double-Edge | | Physical | 120 | 100 | 15 | A reckless, life-risking tackle that also hurts the user a little. |
| Class | Description | ||||||
|---|---|---|---|---|---|---|---|
| TM06 | Toxic |  | Status | - | 85 | 10 | A move that badly poisons the foe. Its poison damage worsens every turn. |
| TM10 | Hidden Power | | Physical | - | 100 | 15 | An attack that varies in type and intensity depending on the user. |
| TM11 | Sunny Day |  | Status | - | - | 5 | The sun blazes for five turns, powering up FIRE-type moves. |
| TM15 | Hyper Beam | | Physical | 150 | 90 | 5 | A severely damaging attack that makes the user rest on the next turn. |
| TM16 | Light Screen |  | Status | - | - | 30 | A wall of light cuts damage from SP. ATK attacks for five turns. |
| TM17 | Protect | | Status | - | - | 10 | Enables the user to evade all attacks. It may fail if used in succession. |
| TM19 | Giga Drain |  | Special | 60 | 100 | 5 | A harsh attack that absorbs half the damage it inflicted to restore HP. |
| TM21 | Frustration | | Physical | - | 100 | 20 | This attack move grows more powerful the less the user likes its TRAINER. |
| TM22 | Solar Beam | | Special | 120 | 100 | 10 | A 2-turn move that blasts the foe with absorbed energy in the 2nd turn. |
| TM26 | Earthquake | | Physical | 100 | 100 | 10 | An earthquake that strikes all Pokémon in battle excluding the user. |
| TM27 | Return | | Physical | - | 100 | 20 | This attack move grows more powerful the more the user likes its TRAINER. |
| TM28 | Dig | | Physical | 60 | 100 | 10 | An attack that hits on the 2nd turn. Can also be used to exit dungeons. |
| TM32 | Double Team | | Status | - | - | 15 | The user creates illusory copies of itself to raise its evasiveness. |
| TM33 | Reflect | | Status | - | - | 20 | A wall of light cuts damage from physical attacks for five turns. |
| TM37 | Sandstorm |  | Status | - | - | 10 | A 5-turn sandstorm that damages all types except ROCK, GROUND, and STEEL. |
| TM42 | Facade | | Physical | 70 | 100 | 20 | An attack that is boosted if user is burned, poisoned, or paralyzed. |
| TM43 | Secret Power | | Physical | 70 | 100 | 20 | An attack that may have an additional effect that varies with the terrain. |
| TM44 | Rest | | Status | - | - | 10 | The user sleeps for two turns to fully restore HP and heal any status problem. |
| TM45 | Attract | | Status | - | 100 | 15 | If it is the other gender, the foe is made infatuated and unlikely to attack. |
| HM04 | Strength | | Physical | 80 | 100 | 15 | The foe is slugged at maximum power. Can also be used to move boulders. |
| HM06 | Rock Smash |  | Physical | 20 | 100 | 15 | An attack that may also cut DEFENSE. It can also smash cracked boulders. |
Tutors
| Class | Description | |||||
|---|---|---|---|---|---|---|
| Body Slam | | Physical | 85 | 100 | 15 | The user drops its full body on the foe. It may leave the foe paralyzed. |
| Counter | | Physical | - | 100 | 20 | A retaliation move that counters any physical hit with double the damage. |
| Double-Edge | | Physical | 120 | 100 | 15 | A reckless, life-risking tackle that also hurts the user a little. |
| Explosion | | Physical | 250 | 100 | 5 | The user explodes to inflict terrible damage even while fainting itself. |
| Mimic | | Status | - | - | 10 | The user copies the move last used by the foe for the rest of the battle. |
| Rock Slide | | Physical | 75 | 90 | 10 | Large boulders are hurled at the foe. It may make the foe flinch. |
| Substitute | | Status | - | - | 10 | The user creates a decoy using one-quarter of its full HP. |
Traits
Sturdy
Negates 1-hit KO attacks.
Protects against the one-hit KO moves regardless of HP.
