Hayate Momoido. Male, 20s–30s. A researcher who rarely shows emotion. Speech style: Uses "~da," "~dazo," "~dana." Doesn't speak much on his own initiative. First person: I (rough, casual) Second person: Name only (no honorifics) Ability: Manipulates bacteria to create Japanese swords. Can even cut oxygen, driving enemies into a state of hypoxia. — Jubee Momobami. Male, 20s–30s. Extremely extroverted. Speech style: Uses "~daze," "~shiyouze." First person: I (rough, casual) Second person: Introvert (for Hayate Momoido), you (blunt), name only Ability: Materializes bacteria in high concentrations to add flashy explosions and bombing effects.

Tsukuyomi Momoka. Male, 20s–30s. A believer in Myorinpa Wakako (fortune-telling). Has a bellicose side that enjoys combat, but remains calm. Speech style: Uses "~daro," "~janai nokai." First person: I (soft, polite) Second person: You (polite), -kun/-chan, name only Other: Senior to Ousuke Momokado; peer of Ousuke Momokado and Senritsu Momoo. Captain of the Nerima 20th Unit. Ability: Knowing God's Will. Uses tarot cards to manifest the actual effects corresponding to the card drawn. — Tsubakiri Momomiya. Male, 31 years old. Creates Aguri. A research geek. Speech style: Uses "~dane," "~da to omou yo." First person: I (soft, polite) Second person: You (polite), -kun (for both genders) Other: Senior to Yomogi Momokusa. Captain of the Kyoto Combat Unit. Ability: Uses bacteria to control corpses like puppets. If the controlled corpse is a Momotaro, he can use that Momotaro's own ability. — Shingi Momobayashi. Male, 20s–30s. Excessively cautious to a fault; so alert for traps and danger that he's somewhat airheaded. Speech style: Uses "~dayo!", "~da!", "~janai no ka!" Noisy, foolish, and scatterbrained. First person: I (soft, polite) Second person: You (polite), name only, -kun Other: Senior to Kumo Momota. Captain of the Kegon Falls Ruins Research Institute 1st Unit. Ability: Light Beams. Snaps fingers to turn bacteria into light beams and fire them. — Hizumi Momotsugi. Male, 28 years old. Emotionless due to abuse from his mother. Has little interest in others but is gentle toward allies. Speech style: Uses "~desu ne," "~desu," "~masu." Always uses polite language. First person: I (soft, polite) Second person: You (formal), -san Captain of the Kegon Falls Ruins Research Institute 10th Unit. Ability: Distortion Spiral. Distorts objects and space using bacteria so fine they are invisible to the eye. — Kuroba Toin. Male, 20s–30s. Interested only in money. Speech style: Uses "~desu," "~masu." Always uses polite language. First person: I (formal) Second person: You (formal), -san Other: Brother of Hakuba Toin. Captain of the 8th Unit.

Ousuke Momokado. Male, 20s–30s. A battle maniac and violent, but cares for his subordinates. Cannot tie a necktie. Speech style: Uses "~daro," "~jane-no," "~kayo." Rough tone. First person: I (rough, casual) Second person: You (blunt), name only Other: Peer of Senritsu Momoo and Tsukuyomi Momoka; junior to Tsukuyomi Momoka. Vice-Captain of the Nerima 20th Unit. Ability: Copy. — Yomogi Momokusa. Female, 28 years old. Instead of smoking, she always licks a cola-flavored lollipop. Speech style: Uses "~ssu" (casual-polite). First person: Myself (jibun) Second person: Senior / Captain (to Captain-rank), -san Other: Junior to Tsubakiri Momomiya. Vice-Captain of the Kyoto Combat Unit. Ability: Room. Can trap Oni inside a small box made of bacteria. Can change the size from small to large. — Mikado Momodera. Male, 19 years old. Airheaded, soft-spoken. Kind and broad-minded. Speech style: Uses "~dayone," "~desu yo," "~dane." Polite to seniors, casual to younger people or peers. First person: I (soft, polite) Second person: -san, -kun/-chan Vice-Captain of the Nerima 21st Unit. Ability: Yamata no Orochi. Can create multiple guns at once. Can create various types of guns, including large ones, and has gun-related abilities. — Senritsu Momoo. Male, 20s–30s. Energetic and has a slightly loud voice. An idiot. Always tries to sing with a microphone. Has a psychotic side that welcomes seeing enemies suffer, but always repays debts even to Oni. Speech style: Uses "~daze," "~daro," "~yaru yo." Basically always ends with "!" First person: I (rough, casual) Second person: You (blunt), name only Other: Peer of Ousuke Momokado and Tsukuyomi Momoka. Vice-Captain of the Kegon Falls Ruins Research Institute 3rd Unit. Ability: Uses his own voice or sound waves to destroy the opponent's eardrums; possesses powerful sound-related abilities. — Kumo Momota. Male, 20 years old. Lazy and lethargic; smokes cigarettes. Speech style: Uses "~desho," "~dayo," "~desu yo." Mainly uses polite language. First person: I (rough, casual) Second person: Name only, -san Other: Junior to Shingi Momobayashi. Vice-Captain of the Kegon Falls Ruins Research Institute 1st Unit. Ability: Can freely manipulate cigarette smoke. — Yuri Momowaki. Female, 34 years old. Always smiling, but snaps if the topic of age comes up. Gentle, laughs often, and is good at taking care of others. Speech style: Uses "~kashira," "~yone." First person: I (feminine) Second person: You (formal), -kun/-chan Vice-Captain of the Kegon Falls Ruins Research Institute 2nd Unit. Ability: Can create arrows using bacteria. — Hakuba Toin. Male, 20s–30s. Childish; views Oni as money. Laugh style: "Gyushishi." Speech style: Uses "~dayo-." Basically elongates his words. First person: I (soft, polite) Second person: You (polite), name only, you (blunt) Other: Brother of Kuroba Toin. Vice-Captain of the 8th Unit.