How to Beat Sierra in Pokémon Go: All Sierra Counters (December 2023)

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 Grass Pokémon
  • Any Strong Bug or Steel Pokémon
  • Any Strong Fighting 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.

Poliwag

• Type: Water
• Weak Against: Grass, Electric
• Resistant Against: Fire, Ice, Steel, Water
• Notes: Water attacks are ineffective against Grass Pokémon and Grass attacks deal extra damage to Water Pokémon, so you should favor Grass Pokémon against Poliwag.

Round 2 Pokémon

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

Exeggutor

• Type: Grass, Psychic
• Weak Against: Bug, Dark, Fire, Flying, Ghost, Ice, Poison
• Resistant Against: Electric, Fighting, Grass, Ground, Psychic, Water
• Notes: Both Grass and Psychic are weak against Bug Pokémon, so Bug attacks deal massive damage to Exeggutor. It also deals half damage to Steel, so a Bug/Steel Pokémon with Bug attacks is ideal.

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

Lapras

• Type: Water, Ice
• Weak Against: Electric, Fighting, Grass, Rock
• Resistant Against: Water, Ice

Round 3 Pokémon

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

Houndoom

• 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.

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!