Eikichi Onizuka

Eikichi Onizuka is the main protagonist of the Great Teacher Onizuka (GTO) anime and manga.

Together with his best friend, Ryuji Danma, they were once known as the Oni-Baku: Shonan's strongest fighting duo. He decided to become a teacher after helped a troubled JK for good.

In the original manga and anime, Onizuka is a 22-year-old bachelor and teacher at Holy Forest Academy. There, he is the homeroom teacher of the troublesome Class 3-4. He teaches social studies, but is renowned throughout the school for teaching life lessons to his students.

Appearance
Onizuka is of average height, has brown eyes, blond hair (dyed), and pierced ears. Onizuka is a chain smoker, rarely seen without a cigarette in his mouth. Unlike other animes, where the character's outfit remains the same, Onizuka's outfit constantly changes. He's well known for having a wide variety of costumes.

Personality
Onizuka is very presumptuous and vulgar which often leads him into trouble. Although he is very hormonal when it comes to girls, he is still a virgin and seems to be unable to get a girlfriend. He likes sexy women to the point of even sexually tempting Nagisa Nagase, Ryuji Danma's girlfriend, without caring that his friend was right behind him. He is often referred to as a pervert and has a fetish with smelling young ladies fresh panties in their drawers. Onizuka is also unashamed of the state of untidiness of his home and the fact that many porn magazines lie around his house.

Onizuka's behavior is akin to that of a child. After finding out that Hajime Fukuroda has a secret longing for the academy's students, he made him into one of his pranks main targets; which consists of hitting him with water rockets.

Despite all this, Onizuka can be very serious when the moment asks for it. To solve problems, he will surely take the most weird and unexpected (and often the hardest) route, but also the most epic. Depending on your point of view, he could be considered a fool or a genius. He never stops surprising the people around him with his behavior, actions, and decisions, except for Ryuji, who has known him for a very long time. Despite this, the school's principal, Ryoko Sakurai, deeply trusts him.

As for being a teacher, Onizuka is very eccentric, be it his methods of teaching or the way he dresses.

Onizuka loves eating. In particular, sushi. On one occasion, purchasing three orders of Otoro (fatty tuna) and even asking for a Sushi Boat. Though, he didn't have enough money to pay for it and ran.

He is always seen traveling via his motorbike (a Kawasaki 750 Road Star Z2); remaining passionate for bikes since his experience as co-leader of the biker gang Oni-Baku.

Abilities
Onizuka is very athletic: being able to bench press 150kg (approximately 330 lbs.). He is a second dan black belt and was a college karate champion. Also, he has stated a number of times that he follows a daily training routine, which includes 500 push ups, 1000 pull ups, and 2000 Hindu squats.

Onizuka's abnormal strength is displayed various times throughout the manga; his fearsome power is used to solve many of his problems as well as his students' problems. Onizuka also has an extremely durable body; he has survived multiple falls off of the school rooftops in order to save students and even another teacher.

Trivia

 * His zodiac sign is Leo.
 * He smokes Mild Seven (now known as Mevius), a Japanese brand of cigarettes (shown in Episode 23 of the anime).
 * His motto is "I want to remain a simple teacher for all my life!"
 * Interests: girls of legal age, cosplay, motorcycles, and to become the greatest teacher in Japan.
 * Heroes: Shōtoku Taishi (a prince from the Asuka period), Eikichi Yazawa (a Japanese singer and song-writer), Kenshiro (main character of the manga series Hokuto No Ken), Satoru Sayama (a Japanese wrestler), and Takumi Fujiwara (a famous driver from the anime series Initial D).
 * During an interview with the creator, Tohru Fujisawa, he confirmed that Onizuka's name does indeed come from Eikichi Yazawa. Also part of the creator can be found in Onizuka.