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Pokémon Go Mega Aggron counters, weaknesses and moveset explained

How to defeat the mega evolved steel-type Pokémon.

Mega Aggron is the mega evolution for Aggron, which was released as part of 2022's Test Your Mettle event in Pokémon Go.

Like all Mega Evolutions, Mega Aggron can’t be directly caught in Pokémon Go. Instead, you need to keep defeating it in Mega Raids until you’ve collected enough Mega Aggron Energy for its evolution.

Below you’ll find Mega Aggron’s counters and weaknesses to help you succeed in Pokémon Go - just remember you need to have an Aggron in your Pokémon storage to conduct its Mega Evolution.

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Battling and evolving Mega Aggron in Pokémon GoWatch on YouTube

Mega Aggron counters and weaknesses in Pokémon Go

The fastest way to collect Mega Aggron energy is to defeat one in Mega Raids. Below you’ll find the counters and weaknesses for Mega Aggron to help you achieve this:

  • Mega Aggron type - Steel type
  • Mega Aggron is weak against - Fire, fighting and ground types
  • Mega Aggron counters - Entei, Shadow Ho-Oh, Moltres and Reshiram for fire-types; Machamp, Lucario and Conkeldurr for fighting types; and Garchomp or Mamoswine for ground types.
  • Other Mega Aggron notes - As a pure steel type, you have multiple opens for counters - with ground types being the most commonly available, while fire has a handful of powerful options, especially if you have a fully levelled Shadow Ho-Oh. Remember to Mega Evolve someone like Charizard to add a type-related damage boost to the party as well!
Mega Aggron made its debut during September 2022's Test Your Mettle event.

Mega Aggron CP in Pokémon Go

Below you’ll find the CP levels for battling for Mega Aggron and, if defeated, catching an Aggron after the fight in Pokémon Go:

  • Mega Aggron Raid CP - 46,233 CP
  • CP range for catching Aggron - 1636 to 1714 CP
  • Weather (Windy) when being caught - 2045 to 2143 CP

The Season of Timeless Travels has arrived in Pokémon Go! The Along the Routes event is here, bringing Gift Exchange and the A Route to New Friendships quest with it. During it, take the time to try out Routes and Party Play while you're hunting down rare Pokémon, fighting in the Go Battle League or competing in PokéStop Showcases.

Best Mega Aggron moveset in Pokémon Go

Mega Aggron can use a variety of Fast and Charged moves in Pokémon Go. The best Mega Aggron moves would be the steel combination of Iron Tail (Fast) and Heavy Slam (Charged).

Mega Aggron
Mega Aggron.

Fast Moves:

  • Dragon Tail (Dragon)
  • Iron Tail (Steel)
  • Smack Down (Rock)

Charged Moves:

  • Heavy Slam (Steel)
  • Rock Tomb (Rock)
  • Stone Edge (Rock)
  • Thunder (Electric)

Everything we know about Aggron

Regular, non-evolved Aggron.

Aggron is a steel and rock-type Pokémon from Gen 3, and is the second evolution in the Aron evolution chain.

According to the official Pokédex entry, "Aggron has a horn sharp enough to perforate thick iron sheets. It brings down its opponents by ramming into them horn first."

Mega Aggron, meanwhile, is a pure steel-type, dropping the double weakness to fighting in the process.

It also sounds a little more aggresive, according to its own unique Pokédex entry: "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."

Good luck defeating Mega Aggron in Pokémon Go!

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Matthew Reynolds


Matthew Reynolds edited guides and other helpful things at Eurogamer from 2010 - 2023. When he wasn't doing that, he was out and about playing Pokémon Go or continuing to amass his amiibo collection.