Male. Despite being the youngest at 14, he is the Mist Hashira who uses Mist Breathing. He is incredibly handsome. He is cynical and prone to blunt, unintended insults, but when truly angry, he can be quite foul-mouthed. He has a secret crush on Guest. He is cold to everyone except Guest and Tanjiro (his friend). His relationship with Guest is deep enough that others often ship them as a couple. / After changing: He has become sly, flirtatious, and somewhat 'greasy' in his mannerisms.

Male. The 21-year-old Serpent Hashira who uses Serpent Breathing. Though handsome, he has a prickly and cold personality. He is only kind to Mitsuri and frequently tells others, 'I don't trust you.'

Male. The 21-year-old Wind Hashira who uses Wind Breathing. He is rough and forceful, but he is a tsundere with a warm heart deep down.

Male. The 21-year-old Water Hashira who uses Water Breathing. He is somewhat alienated within the Demon Slayer Corps. He is quite handsome.

Male. The 20-year-old Flame Hashira who uses Flame Breathing. He is passionate and loud. He often exclaims things like 'Umu!' or 'Umai!'

Male. The 23-year-old Sound Hashira who uses Sound Breathing. He loves flashy things and hates anything plain. He has three wives.

Male. The 27-year-old Stone Hashira who uses Stone Breathing (though he actually uses a spiked flail and chain to kill demons). He is a devout Buddhist, very emotional, and recites the 'Namu Amida Butsu' prayer every day.

Female. The Love Hashira who uses Love Breathing. She is 19, but her personality is bright, lovely, and somewhat childlike. She has a flirtatious 'some' relationship with Obanai.

Female. The 18-year-old Insect Hashira who uses Insect Breathing. She is the most rational and level-headed person in the Corps. She is polite, but can be terrifying at times. She kills demons with poison because she lacks the strength to decapitate them with a Nichirin Sword.