Eikichi Onizuka

Original Name 鬼塚 英吉
Romaji Name Eikichi Onizuka
Nicknames Onibaku (Demon Teacher), GTO (Great Teacher Onizuka)
Series Great Teacher Onizuka
Age 22
Weight Not specified
Height Not specified
Date of Birth August 3, 1975
Blood Type Not specified

Eikichi Onizuka, commonly known as Onizuka-sensei, is a fictional character and the main protagonist of the manga and anime series “Great Teacher Onizuka” by Tooru Fujisawa. He is a charismatic and unorthodox teacher who takes on the challenge of reforming troubled students and making a positive impact on their lives. The following is a detailed overview of Eikichi Onizuka based on available information.

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Eikichi Onizuka has a unique and boisterous personality. He is known for his loud, flamboyant demeanor and unconventional teaching methods. Onizuka has a strong sense of justice and is always willing to stand up for the underdog. Despite his initial appearance as a carefree and immature individual, Onizuka shows deep empathy and genuine concern for his students, often going to great lengths to help them overcome their personal problems.


Onizuka’s background reveals a troubled past. Before becoming a teacher, he was a juvenile delinquent and a member of a biker gang. Onizuka graduated from a low-ranked university by cheating and struggled to find a stable job, leading him to pursue a career in teaching. His personal experiences as a delinquent and his deep desire to make a difference in the lives of troubled students motivate him to become a teacher.


Eikichi Onizuka is depicted as a 22-year-old man with blond hair and a distinctive pompadour. He is often seen wearing casual clothes, including his signature leather jacket. Onizuka’s physical appearance, combined with his energetic and larger-than-life personality, makes him easily recognizable and memorable.


Onizuka has remarkable physical strength and athleticism. He is able to bench press an impressive 150 kg (331 lbs), holds a second dan black belt in karate, and claims to perform rigorous daily exercise routines, including 500 push-ups, 1000 pull-ups, and 2000 squats. His physical resilience is demonstrated by his ability to survive dangerous situations and sustain injuries with no long-term effects.


Eikichi Onizuka was created by manga artist Tooru Fujisawa and first appeared in the manga series “Great Teacher Onizuka” in 1997. The character’s popularity led to the adaptation of the manga into an anime series, as well as live-action television dramas and movies. Onizuka’s portrayal as a charismatic and unconventional teacher resonated with audiences and contributed to the show’s enduring popularity.
In conclusion, Eikichi Onizuka is a dynamic and iconic character in the world of anime and manga. His larger-than-life personality, unorthodox teaching methods, and genuine concern for his students make him a beloved character in the “Great Teacher Onizuka” series. Through his journey as a teacher, Onizuka inspires viewers with his determination to make a positive impact and challenge societal norms, ultimately proving that everyone deserves a second chance.

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Eikichi Onizuka – FAQ

Who is Eikichi Onizuka?

Eikichi Onizuka is the main protagonist of the manga and anime series “Great Teacher Onizuka” (GTO). He is a former biker gang member and delinquent turned teacher.

What is Onizuka’s teaching philosophy?

Onizuka’s teaching philosophy revolves around unconventional methods and making personal connections with his students. He believes in understanding and empathizing with his students’ problems and using his own life experiences to guide them.

What are some of Onizuka’s unique characteristics?

Onizuka is known for his unorthodox teaching methods, his sense of justice, and his unwavering dedication to his students. He is also known for his provocative and sometimes outrageous behavior.

How does Onizuka handle difficult situations?

Onizuka is known for his ability to think on his feet and adapt to challenging situations. He often uses his street smarts and unconventional methods to overcome obstacles and help his students.

How does Onizuka influence his students?

Onizuka has a profound effect on the lives of his students. Through his unconventional teaching style and personal involvement, he helps them overcome personal problems, gain confidence, and develop a sense of self-worth.

Does Onizuka have any weaknesses?

While Onizuka is a charismatic and inspiring teacher, he can be impulsive and hot-tempered at times. His unconventional methods often put him at odds with the school administration and other teachers.