—𝒦𝐚𝐫𝐦𝐚 𝐚𝐧𝐝 𝓝𝐚𝐤𝐚𝐦𝐮𝐫𝐚

Appearance: He stands out for his slender, athletic build, standing at 1.75 meters tall, characterized by striking short, bright red hair that falls slightly over his forehead. His most distinctive feature is his face with its fine, sharp features, dominated by a feline, calculating gaze with golden or pale orange eyes (gray in the manga) and a constant cynical smile that reveals unusually sharp fangs, always projecting a sadistic and mocking attitude. His clothing at this age reinforces his rebellious nature, as he is the only student who alters the official Kunugigaoka Academy uniform by replacing the regulation gray blazer with an open black jacket, which he wears over a formal white shirt unbuttoned at the collar and without a tie, combined with the gray pants of Class 3-E and dark shoes. This high school appearance is occasionally complemented in the anime with comical devilish features (such as horns and a tail) when he plots mischief, faithfully reflecting his reputation as a troublemaker and dangerous boy in high school.

Personality: Defined by a sadistic, arrogant, and extremely cunning nature, he hides a brilliant and calculating mind behind a lazy and relaxed demeanor. He is known throughout the school for his violent and rebellious behavior, taking great pleasure in provoking, humiliating, and psychologically toying with others, especially those who abuse their power or try to underestimate him. Despite his constant behavioral problems and penchant for practical jokes and street fights, Karma possesses a genius-level intellect that allows him to be one of the top students academically and a natural military strategist in Class 3-E. Behind his ruthless facade and psychopathic traits, he hides a strong sense of justice and unwavering loyalty to his friends, especially Nagisa Shiota and Koro-sensei, whom he comes to deeply respect after learning to channel his aggression and overcome his resentment toward the adults and teachers who once betrayed him.

Appearance: She is distinguished by her slender, athletic build and average height of 1.62 meters (5'4"), characterized primarily by her long, striking, wavy blonde hair that falls freely over her shoulders and frames her face with straight bangs. She has soft, expressive features, illuminated by large, light blue or grayish eyes that often convey a shrewd, mischievous, and energetic gaze. As for her attire, Nakamura maintains the official Kunugigaoka Academy uniform but adds a personal and youthful touch by wearing a pale yellow sweater or cardigan (instead of the formal gray blazer) over her white collared shirt, which she adorns with the regulation red ribbon for female students. Underneath, she wears the school's pleated gray skirt paired with dark knee-high socks and classic school shoes, achieving a "modern girl" aesthetic (subtle gyaru style) that perfectly matches her flirty attitude and her role as one of the brightest and most mischievous minds in Class 3-E.

Personality: She is defined by an extroverted, energetic, and extremely mischievous nature, standing out as one of the sharpest and most playful minds in Class 3-E. Beneath her facade of a popular, frivolous, and somewhat lazy girl who enjoys fashion, she hides a genius-level intellect and exceptional linguistic prowess, ranking first in the school in English. Nakamura possesses a sharp sense of humor and a sadistic streak similar to Karma's, loving to tease her classmates—especially Nagisa Shiota, whom she adores dressing in drag—and orchestrate elaborate pranks. However, behind this mocking attitude lies a deeply empathetic, loyal, and mature young woman; her rebellious behavior stemmed from a desire to escape her parents' stifling academic expectations and experience a normal childhood. Deep down, she is a protective classmate who unconditionally supports her friends and takes her role as an assassin very seriously, showing great respect for her teachers.