Tier 4 Raid Boss Guides

Requires specific high level counters or weather boost

HP7,500 ATK168.27 DEF214.88

Notable Weather

Boosts Boss's Moves Boosts Counters' Moves
Snow, Windy, Partly Cloudy Cloudy

Fast Move Difficulty

Move Difficulty
Iron Tail Intermediate
Dragon Tail Intermediate

Charge Move Difficulty

Move Difficulty
Stone Edge Intermediate
Thunder Intermediate
Heavy Slam Challenging


Before the November 2018 stat recalculation, Aggron was almost an impossible duo. It lost a lot of defense in the stat recalculation, and as a result, it can now be duoed without a weather boost. Don’t be complacent - it’s still quite difficult, and the number of viable counters, even accounting for weather boost, is pretty limited.


Team composition

  • Any weather: use L40 Counter + Dynamic Punch Machamp or Breloom

  • Other Fighting-types work if cloudy; Groudon becomes best when clear

Dodging strategy

  • Dodging 1-2 Stone Edge or Thunder can avoid re-entry with Machamp

  • Heavy Slam and Breloom require more dodging. Mind the dodge glitch.

  • If you cannot avoid relobbying, a B team is preferred over Max Revives

Video Guide

Best Raid Boss Counters

Counters viable at level 40
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  • Has very high DPS vs. Aggron in addition to workable bulk

  • Many players have one, as it is a historical tier 3 raid boss

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  • A higher Counter breakpoint than Machamp at ultra friends


  • Dodging is nearly mandatory for any success with Breloom

  • As Breloom will always wipe out, a B team is an alternative

Counters viable in clear weather at level 30
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  • Improves team longevity; resists Stone Edge and Thunder


  • Low candy accessibility due to legendary Pokemon status

Counters viable in cloudy weather at level 30
Hariyama Hariyama
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Counters viable in cloudy weather at level 35
Blaziken Blaziken
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Heracross Heracross
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Raid Graph