Stats & Training
Aggron's all-in on Defense at the expense of Speed. The physical lean is obvious from the bars. Yields 3 Defense EVs and follows a slow 1.25M XP grind.
AGGRON claims an entire mountain as its own territory. It mercilessly beats up anything that violates its environment. This POKéMON vigilantly patrols its territory at all times.
AGGRON is surprisingly protective of its environment. If its mountain is ravaged by a landslide or a fire, this POKéMON will haul topsoil to the area, plant trees, and beautifully restore its own territory.
Aggron Weakness
Type-wise, Aggron takes extra damage from Fighting, Ground, and Water. Watch out for Fighting and Ground attacks, those deal 4x damage. Poison moves do nothing thanks to a full immunity. 9 resistances give it solid defensive coverage on top of that. Aggron's physical bulk (base 180 Def) helps cushion physical weakness hits, but special attackers are the bigger threat.
| Damage | Types |
|---|---|
| 4x (Critical) | Fighting, Ground |
| 2x (Weak) | Water |
| 0.5x (Resist) | Ice, Psychic, Bug, Rock, Ghost, Dragon, Dark |
| 0.25x (Resist) | Normal, Flying |
| 0x (Immune) | Poison |
- Dark and Steel types added — Fairy does not exist yet
- Moves are Physical or Special based on type, not per move
In Ruby & Sapphire, Aerodactyl can KO Aggron with Earthquake (102-120%). Starmie threatens a KO with Surf (112-132%).
 | A | |
Recommended Build AbilityRockhead ItemChoice Band NatureJolly Moves
Damage vs Aggron View Aerodactyl builds →Earthquake 4x102-120%KO Rock Slide14-17% Double Edge8-9% | ||
 Starmie WaterPsychic | A | |
Recommended Build AbilityNatural Cure ItemLeftovers NatureTimid Moves
Damage vs Aggron View Starmie builds →Rapid Spin1-1% Ice Beam19-22% Thunderbolt37-44% Surf 2x112-132%KO | ||
 Heracross BugFighting | B | |
Recommended Build AbilitySwarm ItemSalacberry NatureJolly Moves
Damage vs Aggron View Heracross builds →Megahorn17-20% Rock Slide7-8% | ||
Ruby & Sapphire Evolution
Aggron is the final form in a three-stage chain from Aron through Lairon. Breeding this form produces Aron eggs (slow to hatch). Evolving from Aron gave Aggron the biggest boost in Defense (+80), bringing the total to 530 stats. View every chain in the Evolution Chart.
How to Evolve
Breeding
Breed with Aggron to get Aron eggs using 49 partners from the Monster egg group. Notable egg moves include Body Slam, Endeavor, Smelling Salts and 1 more.
Ruby & Sapphire Aggron Best Moveset
This build takes hits and hits back. Leftovers provides passive recovery each turn, Sturdy supports the gameplan, and max HP and Attack EVs mean Aggron doesn't crumble to chip damage. Plus utility options backing it up.
Best Build
Aggron best EVs are Attack and HP
Physical Tank Moveset
- Rock Slide
- Focus Punch
- Thunder Wave
- Substitute
Recommended Teammates
Moves
Hard to wall, honestly. Aggron threatens 10 types beyond its own STAB, with Normal and Ground standing out. Pair that with Iron Tail and Rock Tomb and switchins need to think twice.
Level-Up Moves
TM Moves
Egg Moves
Tutor Moves
How to Get Aggron in Ruby & Sapphire
No wild encounters for Aggron. The 3-stage chain runs through Aron, which you can catch at solid rates from the locations below. Evolve at level 42 once you've got the levels.
How to Obtain Aggron in Ruby & Sapphire
To get Aggron, start by catching Aron through walking encounters at Lv. 7-44. The chain covers 2 catchable stages before reaching the final form.
Step 1Catch AronGranite Cave - B1FRubyGrass Lv.9-11 Cave40%EarlyGranite Cave - B1FSapphireGrass Lv.9-11 Cave40%EarlyGranite Cave - B2FSapphireGrass Lv.10-12 Cave40%EarlyGranite Cave - B2FRubyGrass Lv.10-12 Cave40%EarlyGranite Cave - 1F Room 2RubyGrass Lv.7-8 Cave10%EarlyGranite Cave - 1F Room 2SapphireGrass Lv.7-8 Cave10%EarlyVictory Road - 1FSapphireGrass Lv.36-40 Cave5%LateVictory Road - 1FRubyGrass Lv.36-40 Cave5%Late
Step 2Catch or Evolve LaironVictory Road - B1FRubyGrass Lv.40-42 Cave15%LateVictory Road - B1FSapphireGrass Lv.40-42 Cave15%LateVictory Road - B2FSapphireGrass Lv.40-44 Cave15%LateVictory Road - B2FRubyGrass Lv.40-44 Cave15%LateVictory Road - 1FRubyGrass Lv.40 Cave10%LateVictory Road - 1FSapphireGrass Lv.40 Cave10%Lateor evolve from Aron (Step 1)
Step 3Aggron ✓
Aggron Guide
In Ruby & Sapphire, Aggron has a 530 base stat total and ranks as C-Tier: a niche pick in Ruby & Sapphire's meta. It works best as a balanced. Rock Slide with Leftovers is the standard set.
Mega Evolution isn't available in Ruby & Sapphire, but Aggron does have a Mega form in Gen 6-7 games (X/Y, ORAS, Sun/Moon). Mega Aggron hits 630 BST.
In Ruby & Sapphire, Aggron's biggest threats include Machamp (Fighting), Golem (Ground), and Swampert (Water), all carrying super-effective STAB moves. Machamp is the most dangerous since Fighting moves deal 4x damage. Aggron has enough bulk to absorb a hit, but don't push the matchup. Pivot to a teammate that resists.
Sturdy is the go-to ability for Aggron. It prevents being KOed from full HP, leaving 1 HP instead. Its hidden ability Heavy Metal can work in specific setups. Rock Head is the other option. Pick based on what your team needs.
In Ruby & Sapphire, Aggron fills the balanced role. It's a physical attacker with base 110 Attack. Base 50 Speed is low. Priority moves or Trick Room are the way to go. And it's tanky enough to absorb a few hits.
Game Availability
Aggron first appeared in Ruby & Sapphire and spans 15 games across 8 generations. It later gained a Mega form in Generation 6, adding new dimensions to its competitive identity.
Click a game to view version-specific details
- Gen 1Y
Yellow - Gen 1RB
Red & Blue - Gen 2GS
Gold & Silver - Gen 2C
Crystal - Gen 3RSDebut
Ruby & Sapphire - Gen 3FRLG
FireRed & LeafGreen - Gen 3E
Emerald - Gen 4Pt
Platinum - Gen 4HGSS
HeartGold & SoulSilver - Gen 4DP
Diamond & Pearl - Gen 5BW
Black & White - Gen 5B2W2
Black 2 & White 2 - Gen 6XY
X & Y - Gen 6ORASMega
Omega Ruby & Alpha Sapphire - Gen 7USUM
Ultra Sun & Ultra Moon - Gen 7SM
Sun & Moon - Gen 7LGPE
Let's Go Pikachu & Eevee - Gen 8SwSh
Sword & Shield - Gen 8PLA
Legends: Arceus - Gen 8BDSP
Brilliant Diamond & Shining Pearl - Gen 9SV
Scarlet & Violet - Gen 9LZA
Legends: Z-A - Gen 10WW
Winds & Waves