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No. 1022

Iron Boulder

Paradox Pokémon

Iron Boulder official artwork
Official art

Iron Boulder is a Rock/Psychic-type Pokémon, 2× weak to Ground, Bug, Ghost, Steel, Water, Grass and Dark, with a base stat total of 590. It isn’t usable in Pokémon Champions’ Regulation M-C.

Height
1.5 m 4′11″
Weight
162.5 kg 358.3 lbs
Base stat total
590 Higher than 93% of Pokémon
Introduced
Gen IX The Indigo Disk
Abilities
It was named after a mysterious object recorded in an old book. Its body seems to be metallic.
See all 2 entries

Base stats

HP90165–197290–384
Atk120126–189220–372
Def8090–145148–284
SpA6879–132126–258
SpD108115–176198–346
Spe124129–193227–381
Total590Higher than 93% of Pokémon
HP90Atk120Def80Spe124SpD108SpA68

Ranges in Pokémon Champions at Lv 50: 0 Stat Points with a −10% Stat Alignment to 32 Stat Points with a +10% one (HP has no alignment).Ranges in the main games at Lv 100: 0 IV/EV with a hindering nature to 31 IV/252 EV with a helpful nature. EV yield: 3 Spe.

Stat calculatorChampions Stat Points & Stat Alignment, or EVs, IVs & nature
Calculate damage →

Type matchups

RockPsychicshow which type causes itweaknessresistance

Weak to

2×
Bug (because of Psychic)Dark (because of Psychic)Ghost (because of Psychic)Grass (because of Rock)Ground (because of Rock)Steel (because of Rock)Water (because of Rock)

Resists

½×
Fire (because of Rock)Flying (because of Rock)Normal (because of Rock)Poison (because of Rock)Psychic (because of Psychic)
Takes normal damage from 6 types
FightingRockElectricIceDragonFairy

Speed tiers

The faster Pokémon moves first each turn, so knowing who you outspeed decides a lot of battles. These are its Speed values at Lv 50 in Pokémon Champions (base Speed 124); Scarf and Tailwind use the Max+ value.

Max+193Max176No SP144Min129Scarf289Tailwind386

At max Speed, Iron Boulder outspeeds 28 of the 30 most used Pokémon in Champions VGC on Showdown.

Speed at Lv 50 in Pokémon Champions: Iron Boulder against the 30 most used Pokémon in Champions VGC on Showdown, fastest first
SpeedPokémon
203Mega Garchomp ZModest · 32 SP · #21 on Showdown
200Mega GengarTimid · 32 SP · #26 on Showdown
193Iron Boulder · Max+32 SP, Speed-raising alignment
190Mega Raichu YTimid · 23 SP · #13 on Showdown
189Mega SalamenceTimid · 32 SP · #4 on Showdown
184WhimsicottTimid · 32 SP · #23 on Showdown
178Mega MetagrossJolly · 32 SP · #28 on Showdown
178Mega StaraptorJolly · 32 SP · #29 on Showdown
176Iron Boulder · Max32 SP, neutral alignment
172SneaslerAdamant · 32 SP · #2 on Showdown
169Mega FloetteTimid · 32 SP · #17 on Showdown
169GarchompJolly · 32 SP · #19 on Showdown
167Mega Charizard YTimid · 32 SP · #14 on Showdown
167Mega GardevoirTimid · 32 SP · #20 on Showdown
161IndeedeeTimid · 32 SP · #30 on Showdown
156Hisuian ArcanineJolly · 32 SP · #16 on Showdown
150ArchaludonTimid · 32 SP · #9 on Showdown
149GholdengoTimid · 32 SP · #8 on Showdown
144Iron Boulder · No SP0 SP, neutral alignment
143BasculegionJolly · 32 SP · #6 on Showdown
128PelipperTimid · 32 SP · #12 on Showdown
120VolcaronaBold · 0 SP · #25 on Showdown
105RillaboomAdamant · 0 SP · #1 on Showdown
101MiloticCalm · 0 SP · #15 on Showdown
95SylveonModest · 15 SP · #18 on Showdown
94Female IndeedeeRelaxed · 0 SP · #7 on Showdown
90PolitoedCalm · 0 SP · #22 on Showdown
90SinistchaBold · 0 SP · #24 on Showdown
85ArmarougeQuiet · 0 SP · #27 on Showdown
80IncineroarCareful · 0 SP · #3 on Showdown
80FarigirafBold · 0 SP · #11 on Showdown
70KingambitAdamant · 0 SP · #5 on Showdown
60Mega GolisopodAdamant · 0 SP · #10 on Showdown

Smogon · Showdown Others at their most common Speed investment in Champions VGC (Reg M-C · Doubles, Sep 2026); Pokémon holding a Mega Stone are shown as their Mega.

Abilities

Competitive

Smogon · Showdown On Showdown

Sep 2026
Other Showdown formats Scarlet & Violet, with Tera
SV SinglesUUBLSV Doubles(DUU)National DexRUBL

2.4% of teams · rank #78 · Singles, one type per team · 1630 weighting · 63,572 battles · Sep 2026

Most common build

Ability
Nature
Jolly
EVs
252 Atk / 4 SpD / 252 Spe
  1. Mighty Cleave
  2. Earthquake
  3. Close Combat
  4. Zen Headbutt

Each part is the most used on its own, so not every team runs this exact set.

Usage by rating

  • All games2.8%
  • 1500 weighting3.0%
  • 1630 weighting2.4%
  • 1760 weighting1.2%

Usage by month

Oct 20252.4%

Abilities

  • 100.0%

EV spreads

  • Jolly 252 Atk / 4 SpD / 252 Spe75.6%
  • Jolly 4 HP / 252 Atk / 252 Spe17.1%
  • Jolly 252 Atk / 4 Def / 252 Spe4.5%
  • Hasty 252 Atk / 4 SpA / 252 Spe1.1%
  • Adamant 252 Atk / 4 SpD / 252 Spe0.6%

Evolution

Iron Boulder does not evolve.

Moves

Level up 17

1Electric Terrain5 turns. Grounded: +Electric power, can't sleep.ElectricStatus——10
1Horn AttackNo additional effect.NormalPhys65100%25
1LeerLowers the foe(s) Defense by 1.NormalStatus—100%30
1Rock ThrowNo additional effect.RockPhys5090%15
7Quick AttackUsually goes first.NormalPhys40100%30
14SlashHigh critical hit ratio.NormalPhys70100%20
21AgilityRaises the user's Speed by 2.PsychicStatus——30
28Psycho CutHigh critical hit ratio.PsychicPhys70100%20
35CounterIf hit by physical attack, returns double damage.FightingPhys—100%20
42Rock Tomb100% chance to lower the target's Speed by 1.RockPhys6095%15
49Sacred SwordIgnores the target's stat stage changes.FightingPhys90100%15
56Mighty CleaveBypasses protection without breaking it.RockPhys95100%5
63Swords DanceRaises the user's Attack by 2.NormalStatus——20
70MegahornNo additional effect.BugPhys12085%10
77Quick GuardProtects allies from priority attacks this turn.FightingStatus——15
84Stone EdgeHigh critical hit ratio.RockPhys10080%5
91Giga ImpactUser cannot move next turn.NormalPhys15090%5

TM / HM / TR 38

TM01Take DownHas 1/4 recoil.NormalPhys9085%20
TM04AgilityRaises the user's Speed by 2.PsychicStatus——30
TM06Scary FaceLowers the target's Speed by 2.NormalStatus—100%10
TM07ProtectPrevents moves from affecting the user this turn.NormalStatus——10
TM25FacadePower doubles if user is burn/poison/paralyzed.NormalPhys70100%20
TM27Aerial AceThis move does not check accuracy.FlyingPhys60—20
TM28Bulldoze100% chance lower adjacent Pkmn Speed by 1.GroundPhys60100%20
TM36Rock Tomb100% chance to lower the target's Speed by 1.RockPhys6095%15
TM47EndureUser survives attacks this turn with at least 1 HP.NormalStatus——10
TM51SandstormFor 5 turns, a sandstorm rages. Rock: 1.5× SpD.RockStatus——10
TM54PsyshockDamages target based on Defense, not Sp. Def.PsychicSpec80100%10
TM58Brick BreakDestroys screens, unless the target is immune.FightingPhys75100%15
TM59Zen Headbutt20% chance to make the target flinch.PsychicPhys8090%15
TM65Air Slash30% chance to make the target flinch.FlyingSpec7595%15
TM66Body Slam30% chance to paralyze the target.NormalPhys85100%15
TM70Sleep TalkUser must be asleep. Uses another known move.NormalStatus——10
TM76Rock BlastHits 2-5 times in one turn.RockPhys2590%10
TM83Poison Jab30% chance to poison the target.PoisonPhys80100%20
TM85RestUser sleeps 2 turns and restores HP and status.PsychicStatus——5
TM87TauntTarget can't use status moves its next 3 turns.DarkStatus—100%20
TM88Swords DanceRaises the user's Attack by 2.NormalStatus——20
TM99Iron Head30% chance to make the target flinch.SteelPhys80100%15
TM103SubstituteUser takes 1/4 its max HP to put in a substitute.NormalStatus——10
TM104Iron DefenseRaises the user's Defense by 2.SteelStatus——15
TM105X-ScissorNo additional effect.BugPhys80100%15
TM120Psychic10% chance to lower the target's Sp. Def by 1.PsychicSpec90100%10
TM136Electric Terrain5 turns. Grounded: +Electric power, can't sleep.ElectricStatus——10
TM147Wild ChargeHas 1/4 recoil.ElectricPhys90100%15
TM149EarthquakeHits adjacent Pokémon. Double damage on Dig.GroundPhys100100%10
TM150Stone EdgeHigh critical hit ratio.RockPhys10080%5
TM152Giga ImpactUser cannot move next turn.NormalPhys15090%5
TM163Hyper BeamUser cannot move next turn.NormalSpec15090%5
TM167Close CombatLowers the user's Defense and Sp. Def by 1.FightingPhys120100%5
TM171Tera BlastIf Terastallized: Phys. if Atk > SpA, type = Tera.NormalSpec80100%10
TM190Solar BladeCharges turn 1. Hits turn 2. No charge in sunlight.GrassPhys125100%10
TM204Double-EdgeHas 33% recoil.NormalPhys120100%15
TM220Meteor BeamRaises user's Sp. Atk by 1 on turn 1. Hits turn 2.RockSpec12090%10
TM221Throat ChopFor 2 turns, the target cannot use sound moves.DarkPhys80100%15

Biology

Iron Boulder is a Paradox Pokémon, a Pokémon which hails from a different time period than normal Pokémon. It hails from the distant future, and is stated to hail from an alternative reality. Iron Boulder and Iron Crown are futuristic Paradox Pokémon which resemble Terrakion and Cobalion, Legendary Pokémon.

Adapted from Wikipedia: List of generation IX Pokémon · CC BY-SA 4.0 · edited.

Pokédex entries

Paradox Pokémon
Blueberry Academy · The Indigo Disk
Color
Gray
—
Blueberry#239
  1. It was named after a mysterious object recorded in an old book. Its body seems to be metallic.

    Violet
  2. It resembles a Pokémon described in a dubious magazine as a Terrakion that had been modified by an evil organization.

    Scarlet

Names around the world

English
Iron Boulder
Japanese
テツノイワオ
Japanese (romaji)
Tetsunoiwao
Korean
무쇠암석
Chinese (Traditional)
鐵磐岩
Chinese (Simplified)
铁磐岩
French
Roc-de-Fer
German
Eisenfels
Spanish
Ferromole
Italian
Massoferreo

Sprites

Artwork and 3D models

Generation IX · animated models

Training

3 Spe
10 ≈1.3% with a Poké Ball at full HP
0
295
Slow

Breeding

Undiscovered
Genderless
50 egg cycles ≈13,005 steps (Gen IV–VII)

Where to find

Not found in the wild in the games we have location data for.

Locations cover Red & Blue to Sword & Shield (with its DLC) and Let’s Go. We don’t have them yet for Legends: Arceus, Brilliant Diamond & Shining Pearl, Scarlet & Violet and Legends: Z-A.