Pokémon GO: this is how you defeat Sierra

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Attention Pokémon GO players! If you're planning on defeating Sierra, one of the Team GO Rocket bosses, you've come to the right place. We'll show you the best strategies and counters to defeat Sierra, one of the toughest and strongest bosses and trainers in Pokémon GO.

How to find Sierra?

In order to compete against Sierra, you first have to find her and for that you need one Rocket radar.

Collect the six mysterious pieces by defeating Team GO Rocket goons and assemble them into a Rocket Radar. Activate this to have one Map with the locations of available Rocket bosses, including Sierra. These bosses also appear in black Team GO Rocket balloons when your Rocket Radar is activated. You can find them in these balloons up to four times a day.

There is no way to specifically find Sierra at a PokéStop as it is random. However, she will linger at this PokéStop all day once you find her. However, note that the boss in the balloon is also random.

Rocket Boss Sierra – Current Teams

Before we dive into the best counters, let's take a look at Sierra's current team. Sierra relies on a total of seven different Pokémon in her battle:


  • Kleinstein
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  • Snorlax, Steelix or Gardevoir (random selection)
  • Sarzenia, Gyarados or Hundemon (random selection)

Now that we know which Pokémon we'll be facing, it's time to discover the best counters for each of them.

What are the best counters to defeat Sierra's 3 Pokémon?

To defeat Sierra's Pokémon, you must survive three rounds. Depending on the random selection of Pokémon in each round, you must react accordingly.

How to counter Kleinstein

Sierra's first Pokémon is Smallstone, a Rock and Ground-type. It is vulnerable to water and plant attacks, but fighting, ground, ice and steel attacks can also be effective.

It's best to go against him Katagami and his Razor leaf and leaf blade attack or Kyogre with cascade and origin wave before.

Alternatively, you can also use Mega Evolutions such as Proto-Kyogre, Mega-Sumpex or Mega-Bisaflor with the corresponding attacks.

Which is most effective against Snorlax, Steelix or Gardevoir?

In the second round Sierra can use one of the three Pokémon: Snorlax, Steelix or Gardevoir.

Against Snorlax rely on combat attacks. For example Barrikadax with a counter and cross slash, Viridium with a double kick and Sanctoblade or Masskito with counterattack and power colossus.

Against Steelix It's best to rely on fighting, fire, water or ground attacks. With Groudon and his Clay shot and fire shot or Stalobor with clay shot and hammer drill.

Puts Sierra Gardevoir as your Pokémon in the second round, it is best to counter with poison, spirit or steel attacks. Giratina with Dark Claw and Shadow Strike or Anego with poison punch and mud bomb are the best choice here

The best counterattacks against Sarzenia, Gyarados or Hundemon

As third and final Pokemon has Sierra the choice between Sarzenia, Gyarados or Hundemon.

Against Sarzenia rely on flying, fire, psychic or ice attacks for example one Solgaleo with Fire Spinner and Psychobiter or Jirachi with confusion and psychokinesis.

Against Gyarados helps you Melmetal with thunder shock and hail of stones or (Crypto-)Magnezone with spark jump and current surge.

And against dogmon help yourself Terrakium with double kick and Sancto blade or Kyogre with cascade and surfer.

Is it worth fighting Sierra?

It's definitely worth taking on Sierra and other Team GO Rocket bosses. Defeating these bosses will give you special rewards and progress in Special Research.

A special rocket radar is required to combat the big one Team GO Rocket boss Giovanni. Therefore, it is important to defeat Sierra and her companions to get this radar.

Remember that the fight against Sierra is important not only for advances in research, but also for Rewards like rare loot and Pokémon encounters.

Therefore, take advantage of every opportunity to compete against Sierra to increase your chances of winning valuable rewards.

Defeating Sierra in Pokémon GO requires a strong team and the right preparation. However, with a Rocket Radar and the best counter Pokémon, you can successfully compete against them and earn great rewards. Good luck, trainer!

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