Throughout the events of the original Agent AIKa there are numerous minor characters among the ranks of the Delmo Corps also referred to as the Delmogeny (デルモゲニイ) which is an army of beautiful women assembled by Professor Hagen for the purpose of propagating his genetic material once he wipes out humanity. They also function as Hagen's private army. Some of them work ordinary jobs like tour guides and waitresses, but they mainly act in espionage activities. Many of these Minor Delmos are unnamed, and most have short-lived appearances.
A member of the Black Delmos with blonde twintails. First seen with a group of fellow Black Delmos in civilian clothing at the Hotel the K-2 Corporation were visiting on their vacation during the events of The Golden Delmo Operation. Later she is present when the Delmos reveal themselves before Aika. After Aika manages to compose herself and reunite with Rion Aida. Twintails and a unit of Black Delmos chase Aika and Rion down to a kitchen where they begin fighting. Blonde Twintails ends up comically struggling with Rion. The latter eventually manages to step on Twintails foot, distracting her and gaining enough time to knock her out with a quick blow to the face that leaves her bleeding from the nose as she promptly falls to the ground.
She is first seen working the Roulette at the Casino in the Hotel the K-2 Corporation were visiting on their vacation during the events of The Golden Delmo Operation. Initially she is seen letting Gozo Aida win at Roulette, yet later she seems to send him on a harsh losing streak. Later during the events of Delmo Operation: White Silver she is seen attempting to capture Gozo Aida. After flirting with Gozo and pouring him multiple drinks, she is alarmed by the fact that he seems to vaguely remember her. Later after they have successfully inebriated Gozo she and a group of fellow Black Delmos rush him in a futile attempt to take him out. She is eventually knocked out by a kick to the face that sends her flying several feet, landing face down with her legs wide spread. However she is later seen knocked out in a different position when Nina Etsuko attempts to contact her unit for an update.
She is first seen working as a waitress in a Bunny Suit (Similar to the Black Bunny Suit the Black Delmo Leader wears during the Ending Sequence) at the Casino in the Hotel the K-2 Corporation were visiting on their vacation during the events of The Golden Delmo Operation. Later during the events of Delmo Operation: White Silver she is seen attempting to capture Gozo Aida. She is alarmed by the fact that he seems to vaguely remember her. Later after they have successfully inebriated Gozo she and a group of fellow Black Delmos rush him in a futile attempt to take him out. She is knocked out off-screen and seen sprawled on the ground later when Nina Etsuko attempts to contact her unit for an update.
Kana is a member of the Black Delmos with pixie-cut black hair. First seen with a group of fellow Black Delmos in civilian clothing at the Hotel the K-2 Corporation were visiting on their vacation during the events of The Golden Delmo Operation. She is also seen accompanying Bianca while they trail Aika and Pierre Valimore. Later she is present when the Delmos reveal themselves before Aika. Lastly when Blue DelmoValerie is found unconscious, Kana and a fellow Black Delmo rush Aika but shortly afterwards Kana is pistol-whipped by Aika and left knocked out, lying next to Valerie.
A Black Delmo with Short Brown Hair and Swirly Glasses Seen during the events of Delmo Operation: White Silver passing herself off as part of the airbase's staff. Later she is seen assisting Golden DelmoRie Petoriyacowa with her tests on Aika Sumeragi. After Rie is put in a sleeper hold and knocked out, Aika heads to the Data Room, where she encounters Swirly Glasses about to make an escape with the disk containing her data. The girl is startled by Aika's appearance and, scared, still attempts to run away, but is easily intercepted by Aika before getting far. We do not get to see exactly what happens after, but we do hear her loud yelps and moans from the other room as Aika subdues her. When the camera gets back to her, she is subdued on the floor, barely conscious and trembling, with her face down and ass up. She lets out a last whimper as she goes unconscious, her lower body collapsing on the floor with the skirt hiked up. We get several shots of her in this position, one of them right from between her wide open legs as Rie gets away with the data. We can also see for the only time her face without the glasses, since it appears they were knocked off her face in the preceding struggle, which also left her mouth drooling heavily. Bears a slight resemblance to Najica Hiiragi from Najica Blitz Tactics.
Catherine (キャサリン Kyasarin) is a member of the Blue Delmos with blonde wavy hair. She is first seen after the parking lot altercation during Beautiful Agent, gathering up the Black Delmos and the Black Delmo Leader alongside other Blue Delmos. After this she is knocked out on a couple different occasions, once by Maypia Alexymetalia when she kicks an airshaft grid that ends up falling on her head, and the second time was after Rudolf Hagen instructed Catherine to escort Rion Aida to a cell. Upon entering said cell Rion somehow managed to surprise her and steal both her uniform and weapon, despite being handcuffed. She then leaves Catherine knocked out on the floor, half naked and with her feet and hands tied up. Despite having the upper hand, she was beaten easily by Rion because she was weak and useless, as well as overconfident. Rion knew the basics of combat, Catherine was no match for her. After the scene when Rion leaves her knocked out, she never reappears, it may be that she is one of the Delmos who perished aboard the ship.
A Blue Delmo with short black hair first seen in Break the Decisive Battle! Delmo Base!. After Sania and Tonia blow up the K-2 Building, Michikusa Shuntaro "introduces" Maypia Alexymetalia to Rion Aida at a diner. There they plan their ambush on the Delmos Base, the waitress shows up to take their order and later proceeds to ambush them at sea with a unit of RPG wielding Blue Delmos. She succeeds in sinking the protagonist's ship. She is however eventually knocked out off-screen by Aika Sumeragi's Shivie's form. We see her for the last time sprawled on the ground alongside 2 other Blue Delmos, laying face down with her legs wide spread.
Commader Oppai is one of the White Delmos as her "nick"name implies she has big breasts. She is easily recognizable for her short reddish-brown hair, ample bust, purple lipstick, and a beauty mark under her right eye. She is first seen during the events of Naked Mission accosting Rion Aida and Maypia Alexymetalia for their ID's after an alarm is triggered Rion and Maypia manage to run away from her. Later for the rest of the first half she is exclusively seen in the command center of the ship alongside many important White Delmos. Similarly she is seen during the events of The Golden Delmo Operation and Delmo Operation: White Silver while the White Delmos are planning their next operations. During the events of Break the Decisive Battle! Delmo Base! she manages to entrap Rion's group in an area where the Golden Delmos are lying in wait. Moments later behind Commander Oppai two Black Delmos are hurled viciously by Aika's Shivie form. As Oppai goes to investigate she is confronted by Aika and the screen quickly cuts to black as Oppai lets out a scream. Lastly she is seen with the Adjutant wounded and bandaged up after Aika's assault.