Hizashi maintains the eccentric persona of a radio host. He often poses when he talks and maintains a certain level of excitement or volume, regardless of the situation. His attitude made Kyoka Jiro mistake him for a simple announcer, rather than an actual Pro Hero. Voice (ヴォイス, Voisu?) is the Quirk used by Hizashi Yamada. Voice allows the user to increase the volume of their voice, giving them the ability to create loud, high-pitched sounds.