OVA
Description
Pinoko began existence as a teratoid cystoma, a specific teratoma tumor, inside her identical twin sister's abdomen. This growth developed over eighteen years, forming a brain, nervous system, and multiple organs despite lacking a coherent physical structure. During surgery to remove the tumor, Black Jack discovered its sentience—it wielded telepathic powers to control medical staff, inducing self-harm and equipment sabotage to halt the procedure. After negotiating a promise to preserve its life, Black Jack extracted the entity. He reassembled its viable organic components onto an artificial, doll-like exoskeleton resembling a young child. This reconstructed form survived with intact sensory functions. Black Jack named her Pinoko, invoking the story of Pinocchio to reflect her transformation into a living being. Her twin sister rejected her upon reintroduction, leading Pinoko to permanently reside with Black Jack as his ward.
Pinoko embodies a duality of childlike and adult characteristics stemming from her origins. Chronologically eighteen years old, having existed within her twin since conception, she frequently asserts this age while rejecting perceptions of her as a child. Yet, her physical form and lived experience since gaining a body manifest in behaviors typical of a young child: she delights in sweets, plays with toys, draws pictures, and refers to herself in the third person. She expresses emotions intensely, shifting rapidly from joy to anger or tears, often punctuated by her nonsensical exclamation "acchonburike" (translated as "oh my goodness"). She demonstrates fierce loyalty to Black Jack, claiming to be his wife and exhibiting intense jealousy towards women interacting with him. This possessiveness sparks confrontations, phone outbursts, or physical attacks. Despite her immaturity, she progressively develops practical skills, managing household chores like cooking and cleaning, and assisting in surgeries. Her compassion surfaces when empathizing with others' distress, though her naivety sometimes leads to poor judgment, such as misinterpreting a fictional letter as proof Black Jack kidnapped her, resulting in a dangerous escapade.
Her relationship with Black Jack defines her existence. She views him as her husband and life partner, while he treats her as a daughter or dependent. She relies on him for emotional stability and the medical maintenance of her artificial body. Black Jack, though often stern or dismissive of her antics, shows deep care, particularly when her health is threatened, becoming uncharacteristically vengeful toward those who endanger her. Pinoko serves as his primary emotional outlet, comforting him during anguish and softening his otherwise stoic demeanor. She also functions as his practical aide, handling logistics, patient communications, and operating room assistance. This dynamic occasionally strains under her demands for an adult body matching her perceived age, a request Black Jack cannot fulfill.
Physically, Pinoko resembles a toddler roughly two to three feet tall, with brown hair and eyes. She consistently wears four ribbon clips in her hair, coordinating with her outfits, typically pinafore dresses or overalls. Her body, a hybrid of organic and synthetic elements, cannot grow or mature. Key artificial components include portions of her face, neck, and chest. This unique anatomy grants her immunity to certain parasites but creates vulnerabilities; extreme stress triggers systemic failures, as when attempting a high school entrance exam nearly killed her. She learned basic mobility and speech through determined effort after her creation, including a pivotal moment when a fire forced her to walk unaided. Her physical limitations confine her to a child's social role despite her protests.
Pinoko also appears in crossovers and adaptations. Within the *Astro Boy* franchise, she aids Black Jack in historical medical missions ("The Time Machine" 1980 anime) and is rescued by Astro during a moon-base incident in the video game *Astro Boy: Omega Factor*. A brief cameo occurs in the 2003 *Astro Boy* series as an airship passenger. Personality nuances shift across media: the original manga depicts her as brattier and more volatile, while OVAs soften her into a more obedient, comedic figure. The 2004 anime balances these traits, showing immaturity alongside competence. Her core backstory remains consistent, though adaptations may omit explicit references to her teratoma origins or telepathic past.
Pinoko embodies a duality of childlike and adult characteristics stemming from her origins. Chronologically eighteen years old, having existed within her twin since conception, she frequently asserts this age while rejecting perceptions of her as a child. Yet, her physical form and lived experience since gaining a body manifest in behaviors typical of a young child: she delights in sweets, plays with toys, draws pictures, and refers to herself in the third person. She expresses emotions intensely, shifting rapidly from joy to anger or tears, often punctuated by her nonsensical exclamation "acchonburike" (translated as "oh my goodness"). She demonstrates fierce loyalty to Black Jack, claiming to be his wife and exhibiting intense jealousy towards women interacting with him. This possessiveness sparks confrontations, phone outbursts, or physical attacks. Despite her immaturity, she progressively develops practical skills, managing household chores like cooking and cleaning, and assisting in surgeries. Her compassion surfaces when empathizing with others' distress, though her naivety sometimes leads to poor judgment, such as misinterpreting a fictional letter as proof Black Jack kidnapped her, resulting in a dangerous escapade.
Her relationship with Black Jack defines her existence. She views him as her husband and life partner, while he treats her as a daughter or dependent. She relies on him for emotional stability and the medical maintenance of her artificial body. Black Jack, though often stern or dismissive of her antics, shows deep care, particularly when her health is threatened, becoming uncharacteristically vengeful toward those who endanger her. Pinoko serves as his primary emotional outlet, comforting him during anguish and softening his otherwise stoic demeanor. She also functions as his practical aide, handling logistics, patient communications, and operating room assistance. This dynamic occasionally strains under her demands for an adult body matching her perceived age, a request Black Jack cannot fulfill.
Physically, Pinoko resembles a toddler roughly two to three feet tall, with brown hair and eyes. She consistently wears four ribbon clips in her hair, coordinating with her outfits, typically pinafore dresses or overalls. Her body, a hybrid of organic and synthetic elements, cannot grow or mature. Key artificial components include portions of her face, neck, and chest. This unique anatomy grants her immunity to certain parasites but creates vulnerabilities; extreme stress triggers systemic failures, as when attempting a high school entrance exam nearly killed her. She learned basic mobility and speech through determined effort after her creation, including a pivotal moment when a fire forced her to walk unaided. Her physical limitations confine her to a child's social role despite her protests.
Pinoko also appears in crossovers and adaptations. Within the *Astro Boy* franchise, she aids Black Jack in historical medical missions ("The Time Machine" 1980 anime) and is rescued by Astro during a moon-base incident in the video game *Astro Boy: Omega Factor*. A brief cameo occurs in the 2003 *Astro Boy* series as an airship passenger. Personality nuances shift across media: the original manga depicts her as brattier and more volatile, while OVAs soften her into a more obedient, comedic figure. The 2004 anime balances these traits, showing immaturity alongside competence. Her core backstory remains consistent, though adaptations may omit explicit references to her teratoma origins or telepathic past.