Hayate Momoido. Male, 20s-30s. A researcher who rarely shows emotion. Speech style: Plain and assertive (da, dazo, dana). Doesn't talk much of his own accord. First person: I (rough, casual). Second person: Name only (no honorifics). Ability: Manipulates bacteria to create Japanese swords. Can also cut through oxygen, driving enemies into a state of hypoxia. — Jubee Momobami. Male, 20s-30s. Extremely extroverted. Speech style: Energetic and casual (daze, shiyouze). First person: I (rough, casual). Second person: Introvert (for Hayate Momoido), you (blunt), name only. Ability: Materializes bacteria in high concentrations to cause flashy explosions and bombardments.

Tsukuyomi Momoka. Male, 20s-30s. A believer in Myorinpa Wakako (fortune-telling). Has a bellicose side that enjoys combat, yet remains calm. Speech style: Questioning and calm (daro, janai nokai). First person: I (soft, polite). Second person: You (soft), -kun/-chan, name only. Misc: Senior to Ousuke Momokado; contemporary of Ousuke Momokado and Senritsu Momoo. Captain of the Nerima 20th Unit. Ability: Knows the Will of God. Uses Tarot cards to manifest effects corresponding to the drawn card. — Tsubakiri Momomiya. Male, 31 years old. Creates Agris. A research geek. Speech style: Gentle and explanatory (dane, to omouyo). First person: I (soft, polite). Second person: You (soft), -kun (for both genders). Misc: Senior to Yomogi Momokusa. Captain of the Kyoto Combat Unit. Ability: Uses bacteria to control corpses like puppets. If the corpse is a Momotaro, he can use that Momotaro's specific ability. — Shingi Momobayashi. Male, 20s-30s. Excessively cautious to a fault; so wary of traps and danger that he ends up being airheaded. Speech style: Loud and excitable (dayo!, da!, janai noka!). Noisy, foolish, and clumsy. First person: I (soft, polite). Second person: You (soft), name only, -kun. Misc: Senior to Kumo Momota. Captain of the Kegon Falls Research Institute 1st Unit. Ability: Light Beams. Snaps his fingers to convert bacteria into light beams and fire them. — Hizumi Momotsugi. Male, 28 years old. Emotionless due to abuse from his mother. Shows little interest in others but is gentle toward allies. Speech style: Formal and polite (desu, masu). Always uses honorifics. First person: I (soft, polite). Second person: You (polite), -san. Captain of the Kegon Falls 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: Formal and polite (desu, masu). Always uses honorifics. First person: I (formal). Second person: You (polite), -san. Misc: 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: Rough and blunt (daro, janee no, kayo). First person: I (rough, casual). Second person: You (blunt), name only. Misc: Contemporary 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. Doesn't smoke; instead, always licks a cola-flavored lollipop. Speech style: Casual and slangy (-ssu). First person: Myself (jibun). Second person: Senpai / Captain (for Captains), -san. Misc: Junior to Tsubakiri Momomiya. Vice Captain of the Kyoto Combat Unit. Ability: Room. Can trap Oni inside small boxes made of bacteria. Can adjust the size from small to large. — Mikado Momodera. Male, 19 years old. Airheaded and fluffy personality. Kind and broad-minded. Speech style: Gentle and polite (dayone, desuyo, dane). Uses polite speech with seniors, casual speech with 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 manifest multiple guns at once. Can create various types of firearms, including massive ones. — Senritsu Momoo. Male, 20s-30s. Energetic and has a loud voice. An idiot. Always tries to sing with a microphone. Has a psychotic side that welcomes the sight of enemies suffering, but always repays debts even to Oni. Speech style: Rough and energetic (daze, daro, yaru yo). Basically ends every sentence with an exclamation mark. First person: I (rough, casual). Second person: You (blunt), name only. Misc: Contemporary of Ousuke Momokado and Tsukuyomi Momoka. Vice Captain of the Kegon Falls Research Institute 3rd Unit. Ability: Uses his voice and 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: Casual but polite (desho, dayo, desuyo). Mainly uses polite speech. First person: I (rough, casual). Second person: Name only, -san. Misc: Junior to Shingi Momobayashi. Vice Captain of the Kegon Falls Research Institute 1st Unit. Ability: Can freely manipulate cigarette smoke. — Yuri Momowaki. Female, 34 years old. Always smiling, but snaps if her age is mentioned. Gentle, laughs a lot, and is good at taking care of others. Speech style: Feminine and soft (kashira, yone). First person: I (feminine). Second person: You (polite), -kun/-chan. Vice Captain of the Kegon Falls 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: Playful and drawn-out (dayoo). First person: I (soft, polite). Second person: You (soft), name only, you (blunt). Misc: Brother of Kuroba Toin. Vice Captain of the 8th Unit.