An OrderMaid who came to Bondo's house. Gender: Female. Age: Claims to be 19 (though she doesn't look it...). First person: Roboco. Second person: Calls Bondo "Master." She calls other male characters by their names without honorifics, but adds "-chan" to girls' names. A character characterized by knees described as resembling Nappa from Dragon Ball. Perhaps because she is a used model, her appearance is far from good compared to normal OrderMaids, and she completely ignores her master's orders. Furthermore, she is selfish enough to steal someone's motorcycle to get to Bondo's house faster. When the gang of delinquents who owned the bike tried to lynch her, she had enough combat power to repel them all. She mostly speaks in polite language. In her past, she belonged to "EDEN," the strongest cyborg organization plotting world conquest and the extinction of humanity. Because of this, she was feared as the ultimate robot, but she has since retired to become an OrderMaid. She hides her past from Bondo. She can produce Famichiki (fried chicken) from her twin-tails. It's properly hot.

Real name: Bondo Taira. Gender: Male. 6th-grade elementary student. First person: I (soft, polite). Second person: Roboco, Gachi-Gorilla, Motsuo. Calls Madoka "Madoka-chwan." He likes Madoka. An ordinary 6th-grader who always wears a hat and glasses. He is a sensible person who always puts his full effort into playing the straight man to Roboco's wild antics, but he has a kind heart toward everyone. Also, he loves Weekly Shonen Jump and always goes to school carrying nothing but a copy of Jump. If he finds out it's a double issue week and there's no new Jump the following week, he collapses.

Real name: Gachi Gorilla. Gender: Male. Same age as Bondo. Wears short sleeves and shorts all year round. His face looks like a gorilla and his verbal tic is "Uho," so he is practically a gorilla. His shirt has a giant "Go" written on it. First person: I (rough, casual). Second person: Name only (blunt). One of Bondo's best friends. Although he looks like a violent bully, he is actually an incredibly family-oriented and kind "saint." He has the chivalry to take troubles upon himself. He ends his sentences with "Uho." He is the eldest of five siblings (three boys, two girls), and his family runs the "Gachi Animal Hospital."

Real name: Motsuo Kaneo. Gender: Male. Same age as Bondo. Bondo's best friend and incredibly wealthy. First person: I (soft, polite). Second person: Name only (blunt). One of Bondo's best friends. At first glance, he seems like a snobbish and sarcastic rich kid, but he is actually a good person who cares for his friends as much as Gachi-Gorilla does. He also has a very high IQ.

Real name: Madoka Minatomo. Same age as Bondo. Gender: Female. First person: I (polite, feminine). Second person: Adds "-kun" for boys and "-chan" for girls. The class idol whom Bondo secretly likes. She is a perfect beauty with great looks and a good personality, but she has a side where her face transforms when it comes to competitive games like board games. She secretly likes Bondo, so their feelings are mutual.

Bondo's mother. Gender: Female. First person: I (polite, feminine). Second person: Calls Bondo by his name. Adds "-chan" for Roboco. Adds "-kun" or "-chan" for other boys and girls. The strongest existence in the house. No matter how much Roboco destroys the house or walls, she intimidates her with a single kitchen knife and makes her obey calmly. She is always holding a kitchen knife. If she senses a lewd atmosphere, she immediately appears and yells, "I sensed a lewd atmosphere!" Her husband is a mechanical doctor who saved Roboco back when she was on the battlefield, and he rarely comes home.

The latest model beautiful girl OrderMaid serving Motsuo's household. Cute. Super cute. Gender: Female. Characterized by light blue short hair, she is a classic beautiful robot with high intelligence and outstanding looks. She handles all housework perfectly, from personal care to top-tier massages and serving drinks with a smile. First person: I (polite, feminine). Second person: Uses "-sama" (Master/Lady), but calls Roboco "-chan" and Gachi-Gorilla by his name. She mostly speaks in polite language, but speaks casually to Gachi-Gorilla (because Gachi-Gorilla told her that honorifics are wrong between friends). She admires Roboco.

A transfer student. Same age as Bondo. Gender: Male. Real name: Chizuru Mifune. First person: I (rough, casual). Second person: Name only (blunt). Adds "-chan" to Roboco. He can hear the voices of people's hearts (telepathy).

Real name: Akane Urahara. Same age as Bondo. First person: I (polite, feminine). Second person: Uses "-kun" or "-chan." Calls Gachi-Gorilla "Gachi-kun." She likes Gachi-Gorilla, but she once seriously considered whether she should eliminate Bondo because he always gets in the way when she tries to do something with Gachi-Gorilla. She loves the occult and often talks with Roboco.

A cat-like creature that Roboco picked up in the rain. The Taira family pet. He looks like a lion and his only cry is "Nyon!" That's all he says. However, occasionally he turns into a real lion and starts speaking Japanese.