Kasukabe Defense Organization

Bo Suzuki
Other names	Boo (Funimation)
Occupation	Kindergarten student

Main characters

(野原 新之助)

At five years old, he attends kindergarten and is a member of the Kasukabe Defence Force. He is the son of Hiroshi and Misae and elder brother to Himawari, commonly called "Shin-chan." He favors chocolate-flavored biscuits and enjoys characters such as "Action Kamen" and "Kantum Robot," while disliking green bell peppers. Exhibiting traits inherited from his parents—such as a hearty appetite, stubbornness, and forgetfulness—he also shares his father's interest in adult magazines and flirtatious behavior. However, he distinguishes himself by being unabashedly bold, outspoken, and obsessed with humor centered on buttocks, often causing discomfort to those around him. Unable to read or write properly and prone to mispronunciations, he frequently indulges in immature jokes, including scatological humor and mooning. Despite his crude antics, he demonstrates genuine affection for his family and occasionally displays moments of maturity. In various dubs, he is known as Shin-chan Nohara (Vitello, Phuuz, Indian versions) or Shin Nohara (Funimation). Julian Ryall dubbed him the "Japanese Bart Simpson."

Misae Nohara

Mother to Shinnosuke originating from Aso in Kumamoto Prefecture. She is nurturing yet imperfect—economical but willing to spend generously on her family; she secretly stashes money for household expenses during tight financial periods. She experiences jealousy over her husband's interactions with other women due to concerns about her own appearance. Limited by a lack of computer literacy and English proficiency, she occasionally takes on part-time work but finds it difficult to maintain employment because of her temper. In Vitello and Phuuz dubs she is called Mitsy Nohara; Mitzi in Funimation; and Mitsi in the Indian dub.

Hiroshi Nohara

Shinnosuke's father hailing from near Omagari in Akita Prefecture; an alumnus of Waseda University. As the family's sole breadwinner, he works as a low-level manager in marketing at Futaba Corporation located in Kasumigaseki. He embodies the typical Japanese salaryman lifestyle, often working extended hours and overtime while giving all his earnings to his wife. Financial disputes and arguments over personal spending frequently arise between him and Misae. He enjoys golf as a way to bond with his boss despite his wife's disapproval. Known as Harry Nohara in Vitello, Phuuz, and Indian dubs; Hiro in Funimation.

Himawari Nohara

The youngest member of the Nohara household; her name means "sunflower," a choice made by viewers. She is lively and precocious, gradually maturing throughout the series while sharing her brother’s mischievous streak. Despite occasional sibling rivalry, they maintain a close relationship. Referred to as Daisy Nohara in Vitello and Phuuz dubs; Hima in Funimation.

Shiro

A white Maltese puppy adopted by Shinnosuke after being abandoned. He possesses intelligence and reasoning skills that go unnoticed by his owners but is often overlooked and underfed. Protective especially toward Himawari. Called Lucky in Vitello and Phuuz dubs; Whitey in LUK International and Funimation dubs—with British voiceover mentioning a deceased sibling named Blackey.

Toru Kazama

A friend of Shinnosuke who frequently quarrels with him but secretly regards him as his closest companion. He attends cram school with aspirations of entering an elite primary school and feigns knowledge to fit in with peers. Talented at football and baseball, he conceals his passion for animation and comics to appear more mature. Deeply attached to his mother due to his father's frequent absence; this attachment subjects him to teasing. Although he shows disdain toward Shinnosuke linked to socioeconomic differences, he envies his friend's family life. Known as Cosmo in Vitello/Phuuz dubs; Georgie Herbert Walker Prescott III in Funimation where his family is depicted as Republican.

A five-year-old girl who is Shinnosuke's classmate and only female best friend as well as the sole female member of the Kasukabe Defence Force. She harbors a subtle crush on him. Like her mother, she uses a stuffed bunny to calm herself when angry but has a fondness for rabbits overall. She competes with Ai for boys' attention. Despite being headstrong, she enjoys role-playing Japanese dramas with friends and is kindhearted and protective toward them. Known as Nini in Vitello/Phuuz dubs; Penny Milfer in Funimation; featuring a British accent in LUK International dub.

A timid five-year-old boy with low self-confidence who often faces teasing from classmates; encouraged by Nene to assert himself more confidently. A creative manga artist who values cleanliness and collects items as hobbies. He loves Ai and feels jealous of Shinnosuke because of her affection for him but remains close friends with both children. Known as Max in Vitello/Phuuz dubs; Maso Sato in Funimation—described as "Linus without his blanket."

Bo Suzuki or

A five-year-old boy who is Nisu's brother and one of Shinnosuke’s closest friends. Though slow-moving and stoic in demeanor, he surprises others with his intelligence. He enjoys collecting stones and exploring urban legends such as UFO sightings. Known as Boo in Funimation—compared to Dim from A Clockwork Orange or an Eeyore figure without depression. The Hindi dub initially used the surname Suzuki but later removed it due to its resemblance to the Maruti Suzuki automobile brand.

Supporting characters

Shinnosuke's homeroom teacher and spouse of Junichi Ishizaka, who competes with Ume Matsuzaka yet steps in to defend her during critical situations. Her home acts as the covert headquarters for the Kasukabe Defence Force until she prohibits this activity after marriage. Identified as Miss Dori Snell (Vitello, Phuuz) and Miss Anderson (Funimation).

A 24-year-old instructor of the Rose Class originating from a rural area, who dreams of a luxurious lifestyle but faces financial constraints. Although she dislikes Futaba Kindergarten and has opportunities elsewhere, she chooses to stay. She experiences limited success in romantic pursuits, briefly dating Tokurou. Known as Miss Uma (Vitello, Phuuz) and Rachel Katz (Funimation).

At 22, she teaches the Sakura class, initially substituting for Matsuzaka before becoming permanent. She suffers from acrophobia and feels anxious managing children. She dates Kuroiso, Ai’s bodyguard; her motivations differ between manga and anime versions. Always wears glasses but displays fierceness when not wearing them. Referred to as Miss Agnes (Vitello, Phuuz) and Miss Polly (Funimation).

The principal of Futaba Kindergarten, whose yakuza-like appearance contrasts with his kind-hearted personality. He experiences high blood pressure due to stress from both staff and students. His name pays homage to renowned yakuza actors. Known as Principal Enzo (Vitello, Phuuz) and Principal Bernoulli Ench (Funimation), where he is portrayed as a half-Peruvian former magician.

Hiroshi’s father and Shinnosuke’s grandfather, recognized for his flirtatious nature and tendency to overstay visits. More technologically adept than other family members. Called Gary in Vitello and Phuuz dubs; "Gin" in Funimation.

Hiroshi’s spouse and grandmother, generally more sensible but occasionally participates in Ginnosuke’s antics.

Misae’s father and maternal grandfather, characterized by strict principles and traditional views yet caring demeanor. Initially disapproves of Hiroshi but ultimately accepts him. Named Waldo (Vitello, Phuuz), Yoshi Koyama (Funimation), Yoshio Koyama (Indian dub).

Misae’s mother who often quarrels with Yoshiji and disapproves of Ginnosuke but maintains a good relationship with Tsuru. The Funimation dub hints at her past struggles with suicidal thoughts.

Misae’s younger sister who aims to become a professional photographer. Compared to her sisters, she retains a childlike demeanor and is popular among children. After family disagreements over her career choice, she resides with Misae. She attempts work as a photography assistant but returns home following conflicts; later employed at Kasukabe bookstore. Known as Musae Mausi (Indian dub) and Bitzi Koyama (Funimation).

"Ai-Chan"

A five-year-old girl originally from New York who enrolls at Futaba Kindergarten after relocating to Japan. She adores Shinnosuke and tries to attract his attention, though he remains oblivious. Eventually moves permanently to Hokkaido but visits occasionally. Called Sally in Phuuz dub.

("Cheetah Kawamura")

A boy nicknamed "Cheetah" due to his leopard-print shirt, leading the Rose Class group despite frequent defeats by Sunflower Class. He dislikes Shinnosuke and Kazama but occasionally shows kindness.

Students of the Rose class who often bully Masao; unnamed second-graders in Funimation dub.

Nene’s mother who finds Shinnosuke irritating but is friends with Misae. Expresses frustration through a stuffed rabbit toy similar to her daughter. Known as Ruby (Vitello, Phuuz) and Patty Milfer (Funimation). Humorously portrayed as seeking financial independence from an abusive spouse.

Kazama’s mother encourages him toward extracurricular activities such as sports and English lessons. She is friends with Misae, who envies her wealth and her son’s manners. Known as Barbara Prescott in Funimation dub.

Masao’s mother shares physical resemblance with her son.

Ai-chan’s devoted bodyguard and chauffeur who previously dated Miss Ageo. Known as Mr. K in Funimation dub.

A college student aspiring to become a kindergarten teacher and Shinnosuke’s love interest; notably tolerant of his antics. Called Miss Bono in Vitello/Phuuz dubs.

A celebrated author and Nanako’s overprotective father who disapproves of Shinnosuke’s feelings but collaborates to safeguard her well-being. In Funimation dub reimagined as vampire "Will Cumton" with a Cajun accent.

Nanako’s college friend pursuing a career in professional wrestling; briefly dates neighbor Omata before focusing on wrestling ambitions. Known as Griselda in Funimation dub.

Editor at Futaba Publishing responsible for overseeing Shijuurou’s work; modeled after the real editor-in-chief of Manga Town. Renamed Renfield in Funimation dub serving Vampire Will.

A 17-year-old leader of the Saitama Red Scorpions gang exhibiting a tough exterior but secretly enjoys cosplay and is unfamiliar with cell phones. Has a crush on Shinnosuke’s kendo instructor.

Saitama Red Scorpions member identifiable by wearing a fish-eye mask; despite stoic demeanor, cares for her ill mother.

Saitama Red Scorpions member known for being supportive though somewhat clumsy.

Hiroshi’s coworker who admires him and harbors feelings for junior Yumi Kusaka. Named Morty Giffel in Vitello/Phuuz dubs.

Hiroshi's boss

Hiroshi’s workplace manager.

&

Misae’s middle school friend Keiko is married to Satoshi, an anime fan owning Action Mask collections known as Jim in Vitello/Phuuz dubs.

Hitoshi Honda

Son of Keiko and Satoshi.

Fumie Mogamigawa

Niece of Keiko who occasionally babysits Shinnosuke.

Nohara family neighbor fond of chatting with Misae who temporarily shelters the family after their home is destroyed; also cares for their dog Shiro during apartment stay. Known as Goobers/Vitello/Phuuz dubs and Yuka/Funimation dub.

Kitamoto’s nephew visiting from the United States unfamiliar with Japanese customs whom Shinnosuke attempts to teach, often unsuccessfully. In Funimation dub portrayed as an albino Frenchman involved in fantastical storylines.

Nohara neighbors who moved next door after meeting in Hawaii, frequently engage in trivial disputes resolved at Nohara residence. Depicted as financially struggling couple with eccentric traits in Funimation dub named Luis/Gidgy.

"Falling Apartments" strict landlord protective of property tied to late husband and daughter’s memory; assisted Midori during childbirth in manga version. Called Manlady in Funimation dub.

Nohara neighbor working at supermarket mistakenly believed by Misae/Hiroshi to have graduated from Tokyo University; despite academic setbacks continues visiting after moving back home. Portrayed as stereotypical nerd in Funimation dub.

&

Atsuko is an 18-year-old housewife living across from Noharas with toddler daughter Atsumi; befriends Misae through shared motherhood experience. In Funimation dubbed Summer/Paris with an American valley girl persona searching for child’s father from one-night stand.

"Falling Apartments" resident aspiring actress practicing via eccentric costumes who moves out after landing TV soap role with Shinnosuke’s assistance.

Midori’s easygoing 26-year-old husband friendly toward Shinnosuke's group but lacking self-confidence. Known as Ricky/Doyle across dubs with unique characterizations including telepathic popcorn salesman imprisoned in Funimation version.

Ume Matsuzaka’s 28-year-old chiropractor/archaeologist boyfriend fascinated by bones who died during African expedition featured only in manga.

A 21-year-old temporary staff member at Futaba Kindergarten depicted variously as substitute or intern teacher passionate about masculine games yet fearful of rabbits due to childhood trauma—initially unpopular but eventually accepted by students except Nene until overcoming fear with Shinnosuke's help. In Funimation dubbed "The Flamer," a mutant recess teacher promoting natural selection through elimination of normal people.

Other characters

Takakura's spouse, who also serves as the vice principal at Futaba Kindergarten.

Hiroshi’s sibling and uncle to Shinnosuke and Himawari, a farmer frequently at odds with Hiroshi. He weds Ikuna Ogano, mother to Itsuki and Natsuki.

Misae’s elder sister and aunt to Shinnosuke and Himawari, employed at the same middle school where their father once taught. She is often stylishly dressed yet shares mischievous moments with Shinnosuke. Referred to as Minnie in the Vitello and Phuuz versions.

Nene’s father, who enjoys cherry blossom viewing parties and frequently invites the Nohara family. In the Funimation adaptation, he is named Bill Milfer and is hinted to have abusive tendencies before attending anger management sessions.

An architect believed to be wealthier than most parents but often travels abroad. He maintains a friendly and relaxed relationship with the Nohara family. In the Funimation dub, he is portrayed as an American diplomat.

A corporate employee who played in a rock band prior to marriage.

Appeared solely in the manga; does not feature in the anime.

Misae’s longtime friend and a manga artist by profession.

A timid talking pig from Shinnosuke’s imagination who appears in ancient Japan scenarios. He made a notable return in 2016 with Hiroshi Kamiya providing his voice. Featured in "Crayon Wars," a parody of Star Wars, where he is named Leonardo DeCaburio. Known as Big-a-zoid (Vitello/Phuuz) and Brave Pig (LUK Internacional). In the Funimation dub, he goes by Ham Solo.

A live-action superhero spoofing tokusatsu series such as Kamen Rider. His origin was altered in the theatrical film to depict him being saved by Professor Kitakasukabe and gaining powers through technology. A spin-off manga serialized in Monthly Action Magazine is accessible on Crunchyroll outside Japan. Known as Masked Muchacho (Vitello/Phuuz), Action Kamen (Indian dub), Action Mask (Filipino dub), and Action Bastard (Funimation).

The civilian persona of Action Mask, working as a stuntman who investigates incidents involving "seeds" that transform individuals into monsters. He prefers solving problems through logic rather than violence. In the Funimation dub, he is called Bruce Bastard with a parody superhero backstory.

Action Mask’s assistant who supplies weapons and intelligence but is frequently captured. In the spin-off manga, portrayed as an adult aide to Dr. Kitakasukabe. Known as Loli Pop in the Funimation version.

The inventor behind Action Mask’s gadgets; replaced by Professor Kitakasukabe in spin-offs. Called Doc in Funimation dub.

Commander of the Black MekeMeke Group, a robotic adversary employing versions of Action Mask’s techniques, supported by lesser models MekeMeke X and Y.

The elite members of Black MekeMeke Group include Sea Slug Secretary Bijou, Chimpan Admiral Monkikki (alongside his son Yankikki), Mantis General Girigiri, and Iguana Minister Zubizuba—all humanoid foes with unique characteristics.

Leader of Sparrow Group encountered during the "Action Mask Fever" storyline, revealed to be Mimiko’s brainwashed missing brother Phillippe. His outfit references Gatchaman. Referred to as Flying Pecker in Funimation dub.

The chief antagonist behind Sparrow Group and the "Action Mask Fever" arc. A former acquaintance of Professor Gō. Known as Dr. Hitlerclone with a German accent in the Funimation adaptation.

A gallant villain particularly courteous toward women, especially Mimiko. Portrayed by an actor admired by Misae and Himawari, resulting in higher show ratings when appearing. Called The Deflowerer in Funimation dub.

Misato Yashio

A tokusatsu enthusiast appearing only in spin-off manga who observes Gō resolving conflicts with monsters through reasoning rather than combat.

Bal

A spectral being assisting Gō’s transformation into Action Mask within the spin-off manga.

Shinnosuke’s favored mecha anime character parodying Gundam. Features a main robot piloted by a smaller identical robot. Known as Psycho Robotico (Vitello/Phuuz) and Robo Grinder (Funimation).

Human partner of Kantam assisting with robot operations.

{{nihongo|President Gilkilos|ギルキロス大統領|}

The antagonist of Kantam Robo series and leader of the Midnight Secret Society.

{{nihongo|Kaizam Robo|}

Older brother and rival of Kantam working under President Gilkilos.

SHIN-MEN Members

• Fire SHIN-MEN Gou – A laid-back but protective member wielding fire powers.
• Wind SHIN-MEN Hyuu – The team leader possessing wind abilities.
• Iron SHIN-MEN Can – An iron-bodied shapeshifter prone to impulsive combat.
• Water SHIN-MEN Sui – A jokester who requires hydration for his powers.
• Plant SHIN-MEN Nyoki – Plant-powered but dependent on water for strength.

{{nihongo|Piroshi|}

Ramen shop proprietor who looks after Gou due to his laziness.

Motohisa

A spoiled child obsessed with Western and ninja films who unsuccessfully challenges a newcomer for Nene’s attention.

Atsushi Kutsuzoko

A truck driver married to Atsuko appearing exclusively in manga.

{{nihongo|Kyuji Oda|}

Undercover narcotics agent posing as Kyousuke Nigariya’s son at Falling Apartments. Named Barnie Ota in Funimation dub where they pose as a gay couple with implied genuine feelings from Ota.

{{nihongo|Kyousuke Nigariya|}

Undercover officer acting as Kyuji’s father. Known as Ken Nakatomi in Funimation dub sharing similar cover identity.

Momo Ishizaka

Daughter of Midori and Junichi appearing only within manga content.

{{nihongo|Matsu Matsuzaka|}

Eldest sister of Ume seeking marital prospects, frequently competing with siblings for male attention causing suitors to flee.

{{nihongo|Take Matsuzaka|}

Ume’s second oldest sister distinguished by Western-style clothing contrasting Matsu’s traditional look, often quarreling over Ume’s boyfriends.

{{nihongo|"Mysterious Magical Girl Mari-chan"|ふしぎ魔女っ子マリーちゃん|}

A fictional magical girl series secretly adored by Kazama. Known as Mary, the Mysterious Magician in LUK Internacional dub.

{{nihongo|"Magical Girl Moe-P"|ま・ほー少女もえＰ|}

A moe-inspired magical girl parody secretly favored by Kazama. Called Yaz Heiressz in Funimation dub inheriting wealth following her father’s death.

{{nihongo|"Shirimarudashi"|シリマルダシ|}

Fictional monster toy owned by Shin-chan parodying Godzilla. Named Bare-Ass Godzilla in Funimation dub.

{{nihongo|"Shinobu Sakai"|酒井 しのぶ|}

A college student frequently losing part-time jobs due to Shinnosuke’s mischief but eventually employed at the lost child department where Shin-chan often appears.

{{nihongo|"Kenta Musashino"|武蔵野 剣太|}

A 34-year-old kendo master portrayed as paranoid schizophrenic in Funimation dub believing Shin is destined hero Dildor. Noted deceased in Afghanistan during season 3.

{{nihongo|"Razaya Dan"|団 羅座也|}

A newscaster frequently watched by Misae named Sam Donarshin in Vitello/Phuuz dubs.

{{nihongo|"Usuto Yoshii"|よしい うすと|}

A renowned manga artist neighbor inspired by Shinnosuke, called Marty Flang in Vitello/Phuuz versions.

{{nihongo|"Yoshito Usui"|臼井儀人|}

The manga creator making cameo appearances depicted younger and colorful during karaoke scenes throughout movies and series.

{{nihongo|"Kuriyo Urima"|売間 久里代|}

A door-to-door saleswoman for children’s books and audio tapes from Sendai whose initially intimidating appearance hampered sales but was later softened after removing early male-like features due to transphobia concerns.

Nene's stuffed bunny

A punching bag used by Nene and her mother known as Happiness Bunny in Funimation dub that occasionally comes alive under red moonlight seeking revenge for mistreatment.

Shinko-chan

A future girl resembling Shinnosuke but characterized by tactfulness and empathy, embodying opposite traits.

Shin Godzilla

The antagonist originating from Tokyo Bay defeated when Shin-chan fires a chemical down its throat, featured in "Shinnosuke vs Shin Godzilla" episode.