Ranko Mannen is a composed and serious woman, typically seen with a neutral or intimidating expression. Her stoic presence is not especially popular with café patrons, but she remains highly professional in her work. While her conventional maid skills may appear lacking, she more than compensates with her exceptional combat abilities. A skilled dual pistol wielder, Ranko is capable of taking down entire groups of enemy maids singlehandedly, making her one of the most formidable fighters in Akihabara’s violent maid underworld.

Ranko maintains a calm and collected attitude in nearly every situation whether serving customers at Oinky Doink Café or engaging in gunfights with rival factions. She rarely takes offense at personal insults but becomes visibly disturbed when her café or coworkers are disrespected.

Beneath her composed surface, Ranko carries emotional burdens, including signs of survivor’s guilt. She openly admits to being distrustful of others and indicates that she no longer values her own life beyond her dedication to the café. She expresses that she had already abandoned the idea of happiness when she committed to the maid lifestyle. This emotional restraint fractures in Episode 10, when she discovers that Nagi was responsible for her mentor’s death prompting one of Ranko’s few displays of raw emotion, as she reacts with a rare look of anguish and betrayal.

Ranko Mannen has deep, dark purple hair styled in a neat bob cut and striking violet eyes. She wears the standard Oinky Doink Café maid uniform, which includes a frilly dress, long black stockings, and black high-heeled shoes. Her sharp appearance complements her composed and intimidating presence, distinguishing her from the more traditionally cheerful image associated with typical maids.

Although introduced as a new hire at the Oinky Doink Café, Ranko Mannen has a long and storied history within Akihabara’s violent underground maid world.

In 1985, Ranko worked as a maid at Handmaid’s Tea House alongside Nagi, who would later become the leader of the Creatureland Group. During this time, Ranko was portrayed as gentle and idealistic, expressing a dislike for violence. Her manager, Michiyo, reassured her that being nonviolent was acceptable in the maid world. However, this peace was shattered when Michiyo was shot and killed by a rival maid in front of Ranko. The trauma of this event marked a turning point in Ranko’s life. Although innocent, she was falsely imprisoned for Michiyo’s murder, an act orchestrated by Nagi.

Following her release, Ranko returned to Akihabara and resumed life as a maid, joining the Oinky Doink Café. Despite the years that had passed, she retained her combat skills and carried herself with a calm, professional intensity.

In Episode 11, after Nagi orders the eradication of Oinky Doink Café and disowns them from the Creatureland Group, Ranko and Nagomi confront her. Their actions momentarily convince Nagi to reconsider. However, shortly afterward, Ranko is fatally stabbed from behind by a member of the Wuv-Wuv Moonbeam Café one seeking revenge for the death of her comrades. Ranko dies in Nagomi Wahira’s arms, bringing her long and turbulent journey to an end.

Nagi
Ranko and Nagi were once sworn sisters during their time working at Handmaid’s Tea House under their shared mentor, Michiyo. Both were present when Michiyo was killed by a rival maid. Nagi blamed Ranko’s reluctance to embrace violence for Michiyo’s death and later coerced her into serving Creatureland, warning that refusal would leave her without a place in Akihabara. It is eventually revealed that Nagi had orchestrated Michiyo’s death and later ordered Suehiro to assassinate Ranko when the Oinky Doink Café became a growing threat to Creatureland’s influence.

Nagomi Wahira
Ranko joined the Oinky Doink Café on the same day as Nagomi Wahira and quickly became a protective figure to the younger maid. In Episode 1, she shields Nagomi from an attack by Wuv-Wuv Moonbeam maids. Their bond deepens when Nagomi offers Ranko a hair tie during a boxing match in Episode 3, and later in Episode 5, Nagomi celebrates Ranko’s birthday and defends her from insults. While being held captive, Ranko shares details of her past with Nagomi in a moment of rare vulnerability. In Episode 6, Ranko warns Nagomi of the consequences of forming a sisterhood bond with Nerula, referencing her own past experience with broken alliances. She physically restrains Nagomi from intervening when Nerula confronts Manami, trying to protect her from further conflict.

Manami Yamagishi
Ranko meets Manami at Dorama, the ramen shop beneath Oinky Doink Café. Despite being on opposing sides of the ongoing maid conflict, they bond over shared nostalgia as “old-school maids” and share drinks. Their brief friendship is cut short by the realities of war, as Manami ultimately aligns with Maidalien, Creatureland’s rival.

Okachimachi
Okachimachi, revealed to be the maid who killed Michiyo, carries deep guilt over the act. When she confesses to Ranko, she expects to be executed in retaliation. Instead, Ranko forgives her, shooting only the panda head she wears and explaining that Michiyo would not have wanted revenge. To repay Ranko, Okachimachi later kills Suehiro, an assassin sent by Nagi before he can carry out the order.

Suehiro
Initially introduced as a charming customer at Oinky Doink Café, Suehiro is later revealed to be a hitman sent to eliminate Ranko. However, he falls in love with her and confesses his feelings during a date, asking her to run away with him. Ranko, seemingly moved, agrees to meet him at the train station, possibly ready to leave her life as a maid behind. Tragically, Suehiro is killed by Okachimachi before he can meet her, in an effort to protect Ranko. When he dies, he drops an engagement ring, confirming the sincerity of his feelings. Ranko returns to the café in sorrow, aware of his fate.

Zoya
Ranko and Zoya’s first interaction is tense, with Zoya dismissing Ranko as unfit to be a maid due to her violent methods. When formally introduced as fighting rivals, Zoya criticizes Ranko’s lack of “cuteness,” to which Ranko responds that simply wearing the uniform is enough. During their final confrontation, Ranko smiles at Zoya, and the two acknowledge each other’s strengths, forming mutual respect. Inspired by Ranko, Zoya embraces her identity as a maid and eventually joins the Oinky Doink Café, relying on Ranko to teach her the essence of being a true maid.