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Ability · Gen 7 · 2 Pokémon

Merciless

This Pokemon's attacks are critical hits if the target is poisoned.

Merciless was introduced in Generation 7. 2 Pokémon and forms can have it.

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Best Pokémon with Merciless

Ranked by usage in public Pokémon Showdown battles (Champions VGC first, then National Dex OU, SV OU and Champions Singles), with how many of each Pokémon's sets actually run Merciless.

  1. Toxapex1. Toxapex#77 in Champions VGC · 2.6% run Merciless

Pokémon with Merciless

As a regular ability (2)

MareanieMareanieToxapexToxapex

Merciless FAQ

What does Merciless do?

This Pokemon's attacks are critical hits if the target is poisoned.

Which Pokémon have Merciless?

2 Pokémon and forms can have Merciless: Mareanie and Toxapex.

What are the best Pokémon with Merciless?

By competitive usage, the most used Pokémon that can have Merciless are Toxapex (#77 in Champions VGC, 2.6% run Merciless).

Effect text from Pokémon Showdown (MIT); which Pokémon have it from Showdown's Pokédex, cross-checked against PokéAPI. Unofficial fan site.