Soundproof

Protects against sound-based moves.

Full effect

This Pokémon is immune to moves flagged as being sound-based. Heal Bell is unaffected. Uproar still prevents this Pokémon from sleeping. This Pokémon can still receive a Perish Song counter through Baton Pass, and will retain a Perish Song counter if it acquires this ability after Perish Song is used. Howl, Roar of Time, Sonic Boom, and Yawn are not flagged as sound-based.

In game description

Soundproofing gives the Pokémon full immunity to all sound-based moves.

Pokemon with Soundproof

#0100

Voltorb #0101

Electrode #0122

Mr Mime #0293

Whismur #0294

Loudred #0295

Exploud #0410

Shieldon hidden #0411

Bastiodon hidden #0439

Mime Jr #0459

Snover hidden #0460

Abomasnow hidden #0626

Bouffalant hidden #0782

Jangmo O #0783

Hakamo O #0784

Kommo O

Using Soundproof in Cobblemon

Abilities are passive and always active, so Soundproof costs you nothing to run. If it is marked hidden on a species above, expect it to be harder to obtain: servers differ in whether hidden abilities come from breeding, an Ability Patch, or events.

See the Pokedex for which abilities each species can have, and IVs, EVs and breeding for how to actually pass one down.