Pokémon Go Sierra counters and team line-up May 2026

All of Pokémon Go Sierra's weaknesses and the best team to use against the Team Rocket Go leader this month, updated for May 2026.

Pokémon Go's Sierra against a dark grey background with the Pocket Tactics logo on it

Pokémon Go's Sierra puts forward a pretty big challenge. Not to mention, she often switches around her lineup, just like her fellow Leaders. Well, if you're looking for the best Pokémon to use to ensure you can take her down, search no further! We've put together a list of the best counters to use against her, to give you that necessary edge in battle.

If you find this useful and want to be the very best like no one ever was, take a look at our Pokémon Go Cliff, Pokémon Go Arlo, and Pokémon Go Giovanni guides to learn about the best counters for their teams.

Here are the best counters for Pokémon Go's Sierra:

What are the best counters for Duskull?

Sierra sends out Duskull as her first combatant; it's a ghost-type 'mon and is weak to dark- and ghost-type enemies.

Here are our recommended Duskull counters:

Sprites Pokémon Moves
Pokémon Go Sierra - a Gengar against a white background Gengar Lick and Shadow Ball
Pokémon Go Sierra - a Dragapult against a white background Dragapult Astonish and Shadow Ball
Pokémon Go Sierra - a Chandelure against a white background Chandelure Hex and Shadow Ball

What are the best counters for Ferrothorn?

Shadow Ferrothorn can be one of Sierra's second Pokémon. It's weak to fighting- and fire-type attacks and resistant to dragon-, grass-, electric-, fairy-, normal-, poison-, psychic-, rock-, steel-, and water-types.

Here are our recommended Ferrothorn counters:

Sprite Pokémon Moves
A Charizard against a white background Charizard Fire Spin and Blast Burn
A Heatran against a white background Heatran Fire Spin and Magma Storm
A Blaziken against a white background Blaziken Fire Spin and Blast Burn

What are the best counters for Flygon?

Sierra's second Pokémon can also be Flygon, a ground/dragon-type 'mon. Make sure you use Pokémon with ice-, dragon-, or fairy-type attacks to take it down.

Here are our recommended Flygon counters:

Sprite Pokémon Moves
Pokémon Go Sierra - a Mamoswine against a white background Mamoswine Powder Snow and Icicle Spear
Pokemon Go Sierra - a Walrein against a white background Walrein Powder Snow and Icicle Spear
A Garchomp against a white background Garchomp Mud Shot and Earth Power

Pokemon Go rocket leader, character chartSierra,

What are the best counters for Blastoise?

Another of Sierra's secondary Pokémon can be Blastoise, a water-type 'mon. Make sure you use Pokémon with electric or grass attacks

Here are our recommended Blastoise counters:

Sprite Pokémon Moves
Pokémon Go Sierra - an Electivire against a white background Electivire Thunder Shock and Wild Charge
Pokémon Go Sierra - a Magnezone against a white background Magnezone Spark and Wild Charge
Pokemon Go Sierra - a Kartana against a white background Kartana Razor Leaf and Leaf Blade

What are the best counters for Steelix?

Sierra can use the steel/ground-type Steelix as her third Pokémon. You should go for fighting-, fire, water-, or ground-type counters.

Here are our recommended Steelix counters:

Sprite Pokémon Moves
An Excadrill against a white background Excadrill Mud-Slap and Scorching Sands
A Garchomp against a white background Garchomp Mud Shot and Earth Power
Pokémon Go Sierra - a Groudon against a white background Groudon Mud Shot and Precipice Blades

What are the best counters for Milotic?

Sierra can use this as one of her third Pokémon. If you encounter Sierra's Milotic, make sure you have a grass- or electric-type 'mon on hand.

Here are the Milotic counters we recommend you use:

Sprite Pokémon Moves
Pokémon Go Sierra - a Magnezone against a white background Magnezone Spark and Wild Charge
Pokémon Go Sierra - an Electivire against a white background Electivire Thunder Shock and Wild Charge
Pokemon Go Sierra - a Kartana against a white background Kartana Razor Leaf and Leaf Blade

What are the best counters for Houndoom?

Sierra's Houndoom only uses dark and fire moves, and is weak to water-, fighting-, rock-, and ground-types, so you've got quite a few options!

Here are the Houndoom counters we recommend you use:

Sprite Pokémon Moves
Pokémon Go Sierra - a Kyogre against a white background Kyogre Waterfall and Origin Pulse
Pokémon Go Sierra - a Rhyperior against a white background Rhyperior Smack Down and Rock Wrecker or Surf
Pokémon Go Sierra - a Conkeldurr against a white background Conkeldurr Counter and Dynamic Punch or Stone Edge
Pokémon Go Sierra - a Machamp against a white background Machamp Counter and Cross Chop or Rock Slide
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What rewards do I get for defeating Sierra?

When you defeat Sierra or any other Team Go Rocket Leader, you are granted some well-deserved rewards. You will always get 1,000 Stardust and a random selection of two of the following items:

  • A 12km egg
  • One Revive
  • One Max Revive
  • One Max Potion
  • One Unova Stone
  • One Sinnoh Stone

For more Pokémon goodness, take a look at our Pokédex and Pokémon Go best Pokémon guide. You can also head over to our Pokémon Go events or Pokémon Go codes lists to see what freebies you can snag!