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Merciless

Ultra Sun & Ultra Moon

Ultra Sun & Ultra Moon

Showing Ultra Sun & Ultra Moon. Items may require trading, an event, or downloadable content.

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

Pokémon with Merciless

Mareanie
Toxapex

Sources: PokéAPI, PKHeX game records, Pokémon Showdown and Serebii.