How to Beat Sierra in Pokémon Go: All Sierra Counters (December 2021)

Sierra? Piece of cake. Use the guide below to see the best counters against her Pokémon!

In Pokémon Go, you'll find that to get specific Pokémon, you'll have to defeat the Team GO Rocket grunts and bosses. The leaders (Cliff, Arlo, Sierra, and Giovanni) are often the most difficult, but provide the greatest rewards. In this guide, we will focus on how to defeat Sierra and which counters are best against her new Pokémon.

Quick Notes

  • The counters we include aren't synonymous with weaknesses. Sometimes these counters will be mentioned for things other than being the opponent's weakness. Other examples may include their movesets or the fact that they're naturally resistant to their opponent.
  • These lists are not ranked from best to worst. While we can provide the best counters to use in any match, there is no guarantee which order they should fall. The effectiveness of each Pokémon largely depends on your play style and battle technique. This being the case, we have instead opted to list the counters alphabetically.
  • Best team setup: There are a few Pokémon types that we recommend adding to your team since they do well against many of the Pokémon in Sierra's lineup. It's best to have some combination of the team listed below.
    • Any Strong Ground Pokémon
    • Any Strong Psychic Pokémon
    • Any Strong Water Pokémon

Related: How to Beat Giovanni in Pokémon Go | All Giovanni Counters - Pro Game Guides

Round 1 Pokémon

The following list has all the options for this gym leader to use as their first Pokémon.

Nidoran ♀

  • Type: Poison
  • Weak Against: Ground, Psychic
  • Resistant Against: Bug, Fairy, Fighting, Grass, Poison
  • Notes: Psychic Pokémon are strong against Nidoran, but they have no resistance to them. If you don't have any of the Pokémon below, we recommend you use a Ground Pokémon. Steel Pokémon are also resistant to Poison, so you could try one of those instead.
PokémonFast AttackCharge Attack
LandorusMud ShotEarthquake
GroudonMud ShotEarthquake

Round 2 Pokémon

The following list has all the options for this gym leader to use as their second Pokémon.


  • Type: Bug, Poison
  • Weak Against: Fire, Flying, Psychic, Rock
  • Resistant Against: Fighting, Grass, Bug, Fairy, Poison
PokémonFast AttackCharge Attack
ReshiramFire FangOverheat
MoltresFire SpinSky Attack
ChandelureFire SpinOverheat

Related: How to Beat Cliff in Pokémon Go | All Cliff Counters - Pro Game Guides


  • Type: Grass, Poison
  • Weak Against: Fire, Flying, Ice, Psychic
  • Resistant Against: Grass, Electric, Fairy, Fighting, Water
  • Notes: It's best to stick to Fire or Psychic Pokémon for Vileplume, as they are effective against most of Sierra's other Pokémon.
PokémonFast AttackCharge Attack
ReshiramFire FangOverheat
MoltresFire SpinSky Attack
HeatranFire SpinFlamethrower
Ho-OhIncinerateBrave Bird


  • Type: Water, Psychic
  • Weak Against: Bug, Dark, Electric, Ghost, Grass
  • Resistant Against: Fighting, Fire, Ice, Psychic, Steel, Water
  • Notes: Slowbro is the odd one out in Sierra's lineup, as it is resistant to a lot of her other Pokémon's weaknesses. Dark, Bug, and Ghost Pokémon are best for Slowbro since they aren't particularly weak against Sierra's other Pokémon.
PokémonFast AttackCharge Attack
DarkraiSnarlShadow Ball
BanetteShadow ClawShadow Ball
ChandelureHexShadow Ball
HoopaAstonishShadow Ball
Origin GiratinaShadow ClawShadow Ball

Round 3 Pokémon

The following list has all the options for this gym leader to use as their third Pokémon.


  • Type: Dark, Fire
  • Weak Against: Fighting, Ground, Rock, Water
  • Resistant Against: Psychic, Dark, Fire, Ghost, Grass, Ice, Steel
  • Notes: If you do not have any of the Pokémon listed below, we recommend using a Ground or Rock Pokémon against Houndoom since they aren't weak against most of her other Pokémon.
PokémonFast AttackCharge Attack
RampardosSmack DownRock Slide
KyogreWaterfallHydro Pump
RhyperiorMud-SlapRock Wrecker
TerrakionSmack DownRock Slide


  • Type: Ground
  • Weak Against: Grass, Ice, Water
  • Resistant Against: Electric, Poison, Rock
  • Notes: Water Pokémon are best against Marowak since they aren't weak against most of Sierra's other Pokémon. Even though Marowak is weak against Grass, we recommend avoid Grass Pokémon since they are very weak against the majority of her lineup.
PokémonFast AttackCharge Attack
KyogreWaterfallHydro Pump
GyaradosWaterfallHydro Pump
SwampertWater GunHydro Cannon
EmpoleonWaterfallHydro Cannon


  • Type: Poison, Ground
  • Weak Against: Ground, Ice, Water, Psychic
  • Resistant Against: Electric, Poison, Rock, Bug, Fairy, Fighting
  • Notes: Nidoqueen is a strong Pokémon, but most of her weaknesses fall in line with the weaknesses for Sierra's other Pokémon, making her easy to counter. We would recommend a Psychic or Ground Pokémon above a Water Pokémon, though.
PokémonFast AttackCharge Attack
LandorusMud ShotEarthquake
KyogreWaterfallHydro Pump

Once you've found Sierra, you'll now be ready to take on all her Pokémon! Check back with this page for occasional updates when they update Pokémon Go!

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About the Author

Freelance writer and jack-of-all-hobbyist-tech-development-trades (website, game, and program). My passion is to create content that entertains and makes people think critically.

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