Voice (ヴォイス, Voisu) Voice allows the user to increase the volume of their voice, giving them the ability to create loud, high-pitched sounds.

The sound that comes from the user’s mouth can reach extremely high levels, enough to incapacitate people by disrupting their eardrums (which may cause bleeding). The loud noise will also drown out other sound-based Quirks, giving the user an advantage against those Quirk types in battle.