aggron-mega #10053
Type Matchups
Weak to (2x damage):
Resistant to (½x damage):
Immune to (0x damage):
aggron-mega
Generation III · #10053 — Iron Armor Pokémon
Mega Aggron is the Mega Evolution of Aggron, a Steel-type Pokémon that undergoes a dramatic transformation when exposed to Aggronite. Unlike its dual Steel/Rock base form, Mega Aggron becomes a pure Steel-type, making it the only Mega Evolution to lose a typing upon Mega Evolving. This transformation was first introduced in Generation VI and represents one of the most significant stat redistributions in the Mega Evolution mechanic. With a base stat total of 630, Mega Aggron trades versatility for sheer defensive dominance, gaining 50 additional Defense points while its Special Defense increases by 20, pushing its Defense stat to an astounding 230. This enormous boost in defensive capability, combined with its Filter ability that reduces super-effective damage by one-quarter, transforms Mega Aggron into one of the most defensively formidable Pokémon ever designed.
Base Stats
Height
2.2m
Weight
395.0kg
Category
Iron Armor Pokémon
Gender
Male 50% / Female 50%
Color
gray
Shape
upright
Habitat
mountain
Abilities
Decreases damage taken from super-effective moves by 1/4.
Aggron-mega Biology & Physical Characteristics
Mega Aggron's physiology represents an extreme evolution of its already imposing form, growing from 2.1 meters to 2.2 meters in height and gaining 35 kilograms to reach 395 kilograms total. The transformation reinforces and enhances the Pokémon's natural steel composition, with its exoskeleton becoming even more heavily armored than before. Its distinctive curved horns, which continue to grow throughout its lifetime and are traditionally used to determine age, become more prominent and reinforced with additional steel plating. The silver armor that covers its shoulders, arms, legs, and back becomes thicker and more imposing, while its massive body retains the three-clawed hands and feet characteristic of the evolutionary line. The gouges and battle scars that mark Aggron's armor are retained through Mega Evolution, with each mark representing a hard-fought battle and worn with pride. Its thick, powerful tail and the pointed, fang-like protrusions around its mouth remain intact, though they too appear to be reinforced with additional metallic density.
Pokedex Numbers
Training
Breeding
Aggron-mega Breeding, Gender Ratio & Egg Groups
Mega Aggron maintains a balanced 50% male, 50% female gender ratio consistent with its base form and the entire Aron evolutionary line. The species belongs to the Monster egg group, indicating compatibility with Pokémon such as Ditto, Nidoran, and other members of the same egg group for breeding purposes. Aggron exhibits a notably lower base friendship value of 35 compared to the typical baseline of 50, reflecting its aggressive, territorial personality and difficult-to-tame nature. This lower happiness baseline suggests that Aggron are naturally combative and independent creatures, less inclined toward immediate bonding with trainers despite their capacity for loyalty once trust is established. Breeding Aggron requires 35 egg cycles to hatch, placing it in the moderate incubation category. The slow growth rate shared across the entire line means that reaching competitive levels requires substantial training investment, though the eventual reward is a powerhouse Pokémon worthy of the time commitment. Trainers seeking to breed Aggron should be prepared for the demanding nature of the species while appreciating the role that its territorial stubbornness plays in establishing a formidable defensive presence.
Held Items
Sprites
Held Items
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
hard-stone
type-enhancement
Held: Rock-Type moves from holder do 20% more damage.
Cost: 1000
TMs & HMs
tm01
platinum
tm01
emerald
tm01
diamond pearl
tm01
firered leafgreen
tm01
ruby sapphire
tm01
black white
tm01
black 2 white 2
tm01
xd
tm01
colosseum
tm01
heartgold soulsilver
tm01
lets go pikachu lets go eevee
tm01
omega ruby alpha sapphire
tm01
x y
tm02
emerald
tm02
crystal
tm02
firered leafgreen
tm02
ruby sapphire
tm02
gold silver
tm02
black white
tm02
heartgold soulsilver
+977 more TMs/HMs
aggron-mega's Evolution Chain
Aggron-mega Evolution, Mega Evolution & Special Forms
Aggron reaches its final evolutionary form when it levels up to level 42 from Lairon, completing the three-stage evolutionary line that begins with the diminutive Aron. Mega Evolution represents a further refinement beyond standard evolution, occurring when Aggron is exposed to Aggronite during battle. The Mega Evolution process elevates Aggron's Attack stat from 110 to 140 and its Defense from 180 to a phenomenal 230, while also increasing Special Defense from 60 to 80. Notably, Mega Aggron loses the Rock typing that characterized the base form, becoming exclusively Steel-type and eliminating several resistances while gaining immunity to Poison-type moves. This transformation is visually dramatic, with the Pokémon becoming noticeably bulkier and more armored. The shift from Steel/Rock to pure Steel represents a deliberate design choice prioritizing extreme physical durability over type coverage, making Mega Aggron a singular specialist in defensive capability rather than a balanced sweeper.
Where to Find
Location data not available for this Pokémon in the database.
Aggron-mega Behaviour and Natural Habitat
Mega Aggron exhibits the same territorial nature as its base form, claiming entire mountains as its exclusive domain and fiercely defending them from intruders. The Pokédex reveals that Aggron is surprisingly protective of its environment, demonstrating unexpected environmental stewardship by hauling topsoil, planting trees, and restoring its territory if it is damaged by natural disasters such as landslides or fires. Mega Aggron would presumably exhibit these same protective instincts with even greater intensity, using its enhanced physical strength to reshape and defend its mountain home. Despite its fearsome appearance and aggressive defense of territory, Aggron is not mindlessly violent—it vigorously patrols its domain and only attacks those who genuinely threaten its environment. In its Mega form, this defensive behavior would be amplified, making Mega Aggron a force of nature that actively maintains ecological balance within its claimed territory while mercilessly repelling any perceived threats.
Pokedex Entries
Generation III
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.
Its iron horns grow longer a little at a time. They are used to determine the AGGRON’s age. The gouges in its armor are worn with pride as mementos from battles.
It claims a large mountain as its sole territory. It mercilessly thrashes those that violate its space.
Generation IV
While seeking iron for food, it digs tunnels by breaking through bedrock with its steel horns.
You can tell its age by the length of its iron horns. It claims an entire mountain as its territory.
Generation V
While seeking iron for food, it digs tunnels by breaking through bedrock with its steel horns.
It claims an entire mountain as its own. The more wounds it has, the more it has battled, so don’t take it lightly.
Generation VI
It claims an entire mountain as its own. The more wounds it has, the more it has battled, so don’t take it lightly.
While seeking iron for food, it digs tunnels by breaking through bedrock with its steel horns.
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 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.
Generation VIII
Aggron has a horn sharp enough to perforate thick iron sheets. It brings down its opponents by ramming into them horn first.
Long ago, there was a king who wore a helmet meant to resemble the head of an Aggron. He was trying to channel the Pokémon’s strength.
Aggron-mega Name Origin & Design Inspiration
The name Aggron combines the words 'aggressive' and 'iron,' directly reflecting its fierce territorial nature and metallic composition. The Japanese name Bossgodora derives from 'boss' and likely references the godora, emphasizing its role as a powerful territorial commander. The design itself draws inspiration from multiple prehistoric creatures, most notably Ceratopsidae family dinosaurs like Triceratops due to its prominent curved horns, as well as Ankylosaurus, the heavily armored dinosaur whose plated structure mirrors Aggron's exoskeleton. The visual progression from the small, spiky Aron through the mid-stage Lairon to the massive Aggron represents a complete transformation from a creature appearing almost reptilian or armadillo-like to a full bipedal behemoth. The Mega Evolution form exaggerates these design elements toward extremes, emphasizing bulk and armor plating at the expense of mobility, creating an aesthetic that prioritizes fortress-like durability. The loss of Rock typing in Mega form suggests a refinement toward pure metallurgical perfection, as if the Pokémon's body has been fully assimilated into an impenetrable steel armor rather than maintaining a rocky foundation.
Learnable Moves
Aggron-mega can learn 92 moves:
Move | Type | Cat. | Power | Acc. | PP |
|---|---|---|---|---|---|
| aerial ace | flying | Physical | 60 | — | 20 |
| aqua tail | water | Physical | 90 | 90 | 10 |
| attract | normal | Status | — | 100 | 15 |
| autotomize | steel | Status | — | — | 15 |
| blizzard | ice | Special | 110 | 70 | 5 |
| block | normal | Status | — | — | 5 |
| brick break | fighting | Physical | 75 | 100 | 15 |
| brutal swing | dark | Physical | 60 | 100 | 20 |
| bulldoze | ground | Physical | 60 | 100 | 20 |
| confide | normal | Status | — | — | 20 |
| cut | normal | Physical | 50 | 95 | 30 |
| dark pulse | dark | Special | 80 | 100 | 15 |
| dig | ground | Physical | 80 | 100 | 10 |
| double team | normal | Status | — | — | 15 |
| double edge | normal | Physical | 120 | 100 | 15 |
| dragon claw | dragon | Physical | 80 | 100 | 15 |
| dragon pulse | dragon | Special | 85 | 100 | 10 |
| dragon tail | dragon | Physical | 60 | 90 | 10 |
| earth power | ground | Special | 90 | 100 | 10 |
| earthquake | ground | Physical | 100 | 100 | 10 |
| endeavor | normal | Physical | — | 100 | 5 |
| facade | normal | Physical | 70 | 100 | 20 |
| fire blast | fire | Special | 110 | 85 | 5 |
| fire punch | fire | Physical | 75 | 100 | 15 |
| flamethrower | fire | Special | 90 | 100 | 15 |
| flash cannon | steel | Special | 80 | 100 | 10 |
| fling | dark | Physical | — | 100 | 10 |
| focus blast | fighting | Special | 120 | 70 | 5 |
| focus punch | fighting | Physical | 150 | 100 | 20 |
| frustration | normal | Physical | — | 100 | 20 |
| giga impact | normal | Physical | 150 | 90 | 5 |
| harden | normal | Status | — | — | 30 |
| headbutt | normal | Physical | 70 | 100 | 15 |
| heavy slam | steel | Physical | — | 100 | 10 |
| hidden power | normal | Special | 60 | 100 | 15 |
| hone claws | dark | Status | — | — | 15 |
| hyper beam | normal | Special | 150 | 90 | 5 |
| ice beam | ice | Special | 90 | 100 | 10 |
| ice punch | ice | Physical | 75 | 100 | 15 |
| icy wind | ice | Special | 55 | 95 | 15 |
| incinerate | fire | Special | 60 | 100 | 15 |
| iron defense | steel | Status | — | — | 15 |
| iron head | steel | Physical | 80 | 100 | 15 |
| iron tail | steel | Physical | 100 | 75 | 15 |
| low kick | fighting | Physical | — | 100 | 20 |
| magnet rise | electric | Status | — | — | 10 |
| metal burst | steel | Physical | — | 100 | 10 |
| metal claw | steel | Physical | 50 | 95 | 35 |
| metal sound | steel | Status | — | 85 | 40 |
| mud slap | ground | Special | 20 | 100 | 10 |
| outrage | dragon | Physical | 120 | 100 | 10 |
| payback | dark | Physical | 50 | 100 | 10 |
| power up punch | fighting | Physical | 40 | 100 | 20 |
| protect | normal | Status | — | — | 10 |
| rain dance | water | Status | — | — | 5 |
| rest | psychic | Status | — | — | 5 |
| return | normal | Physical | — | 100 | 20 |
| roar | normal | Status | — | — | 20 |
| rock polish | rock | Status | — | — | 20 |
| rock slide | rock | Physical | 75 | 90 | 10 |
| rock smash | fighting | Physical | 40 | 100 | 15 |
| rock tomb | rock | Physical | 60 | 95 | 15 |
| round | normal | Special | 60 | 100 | 15 |
| sandstorm | rock | Status | — | — | 10 |
| secret power | normal | Physical | 70 | 100 | 20 |
| shadow claw | ghost | Physical | 70 | 100 | 15 |
| shock wave | electric | Special | 60 | — | 20 |
| sleep talk | normal | Status | — | — | 10 |
| smack down | rock | Physical | 50 | 100 | 15 |
| smart strike | steel | Physical | 70 | — | 10 |
| snore | normal | Special | 50 | 100 | 15 |
| solar beam | grass | Special | 120 | 100 | 10 |
| spite | ghost | Status | — | 100 | 10 |
| stealth rock | rock | Status | — | — | 20 |
| stomping tantrum | ground | Physical | 75 | 100 | 10 |
| stone edge | rock | Physical | 100 | 80 | 5 |
| strength | normal | Physical | 80 | 100 | 15 |
| substitute | normal | Status | — | — | 10 |
| sunny day | fire | Status | — | — | 5 |
| superpower | fighting | Physical | 120 | 100 | 5 |
| surf | water | Special | 90 | 100 | 15 |
| swagger | normal | Status | — | 85 | 15 |
| tackle | normal | Physical | 40 | 100 | 35 |
| take down | normal | Physical | 90 | 85 | 20 |
| taunt | dark | Status | — | 100 | 20 |
| thunder | electric | Special | 110 | 70 | 10 |
| thunder punch | electric | Physical | 75 | 100 | 15 |
| thunder wave | electric | Status | — | 90 | 20 |
| thunderbolt | electric | Special | 90 | 100 | 15 |
| toxic | poison | Status | — | 90 | 10 |
| uproar | normal | Special | 90 | 100 | 10 |
| water pulse | water | Special | 60 | 100 | 20 |
Aggron-mega Competitive Battle Guide
Mega Aggron stands as one of the most defensively oriented Pokémon available to competitive trainers, with its extraordinary Defense stat of 230 making it capable of absorbing physical attacks that would devastate most opponents. The Filter ability further enhances its defensive profile by reducing super-effective damage by 25%, effectively providing additional resistances that multiply its effective bulk. This capability transforms moves that would normally be devastating to Steel-types—such as Fire, Fighting, and Water moves—into manageable threats. However, Mega Aggron's competitive viability is significantly constrained by its abysmal Speed stat of 50, requiring either heavy Speed investment or reliance on priority moves and defensive strategies. Its Special Attack of only 60 limits offensive options, making Mega Aggron primarily a defensive pivot or wall rather than a primary attacker. The loss of Rock typing removes valuable resistances that the base form possessed, including Rock, Normal, and Flying resistances, which can be strategically significant. Despite these limitations, Mega Aggron excels in defensive metagames and can serve as an excellent physical wall that gradually wears down opponents while resisting their attacks, particularly when paired with reliable recovery moves or supporting teammates.
Commonly Asked Questions About Aggron-mega
What type is Aggron-mega?
Aggron-mega is a steel type Pokemon.
What does Aggron-mega evolve into?
Aggron-mega does not evolve into any other Pokemon. It is the final form in its evolution line.
What are Aggron-mega's weaknesses?
Aggron-mega is weak to fighting, ground and fire type moves.
Aggron-mega Cultural Impact & Franchise History
Aggron has maintained significant cultural presence throughout the Pokémon franchise since its introduction in Generation III, appearing prominently in the anime series with several memorable trainers wielding the species in important battles. The Pokémon's design has inspired merchandise, artwork, and competitive team building discussions across decades of the franchise's history. Its status as a rare and powerful pure Steel-type Mega Evolution has made it particularly notable in competitive communities, where discussions of bulky defensive Pokémon frequently reference Mega Aggron's unprecedented Defense stat. The species' environmental stewardship behavior, as described in Pokédex entries, has contributed to its characterization as a protector of nature despite its aggressive exterior, creating a compelling contradiction that resonates with fans. Video game appearances across multiple generations have consistently featured Aggron or related species in late-game trainer rosters, cementing its reputation as a formidable opponent. The visual design of Aggron has proven enduringly popular among fans who appreciate its combination of dinosaur inspiration and industrial aesthetic, resulting in substantial fan art communities and competitive prominence that has persisted through major game releases.
Where to Find Aggron-mega in Every Pokémon Game
Mega Aggron became available in Generation VI games, where Mega Evolution mechanics were first introduced, and has remained accessible in subsequent generations with few exceptions. Players can obtain Aggron in various games across the franchise by catching Aron in early-game locations and training it through Lairon until it reaches level 42. The Aggronite Mega Stone required for Mega Evolution has been distributed through different methods depending on the game version, including post-game availability in core titles and special distributions in certain releases. In Pokémon Legends: Z-A, Aggron appears as part of the Pokédex with local number 0201, suggesting continuing relevance in modern games. The species can also be encountered in competitive formats where Mega Evolution is permitted, making it accessible to players building balanced teams. Availability of breeding specimens is straightforward given Aggron's Monster egg group classification and its presence in numerous regional Pokédexes across different game generations. Modern players can obtain Aggron through multiple pathways including direct capture of its pre-evolution, breeding compatible parents, or trading with other players, ensuring that dedicated trainers can readily acquire this defensive powerhouse for their teams.