Generation Iii
Soundproof
Avoids sound-based moves.
Detailed 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.
Pokémon With Soundproof
18 canonical Pokémon forms can have this Ability.

Voltorb 
Electrode
Mr Mime
Whismur
Loudred
Exploud
Mime Jr
Jangmo O
Hakamo O 
Kommo O
Kommo O Totem
Hisuian Voltorb
Hisuian Electrode
Shieldon
Bastiodon
Snover
Abomasnow
Bouffalant