Aggron (Mega)

SteelFilter

In HeartGold Generations: It is not in any of this guide's encounter tables. Steel type, base stats total 630.

Level-up moves 22

Lv	Move	Type	Cat	Pow	Acc	PP
1	Tackle A physical attack in which the user charges and slams into the foe with its whole body.	Normal	Phys	40	100	35
1	Harden The user stiffens all the muscles in its body to raise its Defense stat.	Normal	Stat	—	—	30
1	Metal Claw The foe is raked with steel claws. It may also raise the user’s Attack stat.	Steel	Phys	50	95	35
1	Rock Tomb Boulders are hurled at the foe. It also lowers the foe’s Speed by preventing its movement.	Rock	Phys	60	95	15
1	Mud-Slap The user hurls mud in the foe’s face to inflict damage and lower its accuracy.	Ground	Spec	20	100	10
1	Headbutt The user attacks with its head. It may make the foe flinch. To find Pokémon, hit trees.	Normal	Phys	70	100	15
4	Mud-Slap The user hurls mud in the foe’s face to inflict damage and lower its accuracy.	Ground	Spec	20	100	10
10	Metal Claw The foe is raked with steel claws. It may also raise the user’s Attack stat.	Steel	Phys	50	95	35
11	Headbutt The user attacks with its head. It may make the foe flinch. To find Pokémon, hit trees.	Normal	Phys	70	100	15
13	Rock Tomb Boulders are hurled at the foe. It also lowers the foe’s Speed by preventing its movement.	Rock	Phys	60	95	15
15	Roar The foe is scared off, to be replaced by another Pokémon in its party. In the wild, the battle ends.	Normal	Stat	—	—	20
18	Protect It enables the user to evade all attacks. Its chance of failing rises if it is used in succession.	Normal	Stat	—	—	10
24	Rock Slide Large boulders are hurled at the foe to inflict damage. It may also make the target flinch.	Rock	Phys	75	90	10
25	Iron Head The foe slams the target with its steel-hard head. It may also make the target flinch.	Steel	Phys	80	100	15
33	Metal Sound A horrible sound like scraping metal is emitted to sharply reduce the foe’s Sp. Def stat.	Steel	Stat	—	85	40
34	Take Down A reckless, full-body charge attack for slamming into the foe. It also damages the user a little.	Normal	Phys	90	85	20
46	Iron Tail The foe is slammed with a steel-hard tail. It may also lower the target’s Defense stat.	Steel	Phys	100	75	15
49	Autotomize The user sheds part of its body to make itself lighter and sharply raise its Speed stat.	Normal	Stat	—	—	15
52	Iron Defense The user hardens its body’s surface like iron, sharply raising its Defense stat.	Steel	Stat	—	—	15
63	Double-Edge A reckless, life- risking tackle. It also damages the user by a fairly large amount, however.	Normal	Phys	120	100	15
65	Heavy Slam The user slams into the target. The greater the weight difference, the greater the damage.	Steel	Phys	—	100	10
76	Metal Burst The user retaliates against the foe that last inflicted damage on it with much greater power.	Steel	Phys	—	100	10

* a legal move, just moved to level-up · ** new to this game

TMs & HMs 59

#	Move · where to get it	Type	Pow
TM01	Focus Punch	Fighting	150
TM02	Dragon Claw	Dragon	80
TM03	Water Pulse	Water	60
TM05	Roar	Normal	—
TM06	Toxic	Poison	—
TM10	Hidden Power	Normal	60
TM11	Sunny Day	Fire	—
TM12	Taunt	Dark	—
TM13	Ice Beam	Ice	90
TM14	Blizzard	Ice	110
TM15	Hyper Beam	Normal	150
TM17	Protect	Normal	—
TM18	Rain Dance	Water	—
TM21	Frustration	Normal	—
TM22	Solar Beam	Grass	120
TM23	Iron Tail	Steel	100
TM24	Thunderbolt	Electric	90
TM25	Thunder	Electric	110
TM26	Earthquake	Ground	100
TM27	Return	Normal	—
TM28	Dig	Ground	80
TM31	Brick Break	Fighting	75
TM32	Double Team	Normal	—
TM34	Shock Wave	Electric	60
TM35	Flamethrower	Fire	90
TM37	Sandstorm	Rock	—
TM38	Fire Blast	Fire	110
TM39	Rock Tomb	Rock	60
TM40	Aerial Ace	Flying	60
TM42	Facade	Normal	70
TM43	Secret Power	Normal	70
TM44	Rest	Psychic	—
TM45	Attract	Normal	—
TM52	Focus Blast	Fighting	120
TM56	Fling	Dark	—
TM58	Endure	Normal	—
TM59	Dragon Pulse	Dragon	85
TM65	Shadow Claw	Ghost	70
TM66	Payback	Dark	50
TM68	Giga Impact	Normal	150
TM69	Rock Polish	Rock	—
TM71	Stone Edge	Rock	100
TM72	Avalanche	Ice	60
TM73	Thunder Wave	Electric	—
TM76	Stealth Rock	Rock	—
TM78	Captivate	Normal	—
TM79	Dark Pulse	Dark	80
TM80	Rock Slide	Rock	75
TM82	Sleep Talk	Normal	—
TM83	Natural Gift	Normal	—
TM87	Swagger	Normal	—
TM90	Substitute	Normal	—
TM91	Flash Cannon	Steel	80
HM01	Cut	Normal	50
HM03	Surf	Water	90
HM04	Strength	Normal	80
HM05	Whirlpool	Water	35
HM06	Rock Smash	Fighting	40
HM08	Rock Climb	Normal	90

Where to find Aggron (Mega)

Not found in the wild — evolve or trade for it.

Base stats

HP70

Attack140

Defense230

Sp. Attack60

Sp. Defense80

Speed50

Total630

Compared with the official games

Against the base species it is built from:

Stats Attack 110 → 140, Defense 180 → 230, Sp. Def 60 → 80 (total 530 → 630)
Type Steel / Rock → Steel
Abilities gains Filter and loses Sturdy, Rock Head, Heavy Metal

Compared against present-day official data. The Fairy type and hidden abilities arrived after Pokémon HeartGold, so a difference here can belong to the series rather than to this game.

Aggron (Mega) in other guides

The same Pokémon, as 14 other hacks change it:

Unbound Pokémon Too Many Types 2 Pokémon Soulgold Pokémon R.O.W.E Sword and Shield Ultimate Plus Radical Red Elite Redux Inclement Emerald Pokémon Emerald Imperium Pokémon: Wishes of Tomorrow Pokémon Exceeded Low Budget Crystal Pokémon Emerald Squared Pokémon Omega Ruby Origins