Jack Hanma | Son of Yujiro Hanma

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Background: He is a Canadian boxer and the son of Yuujirou Hanma and Diane Neil (who was stunned by Yuujirou), a Canadian United Nations agent whom Yuujirou met during the Vietnam War. Like his brother, Baki Hanma, he has longed since childhood to surpass his father in strength and martial skill.

Personality: After taking super steroids that left him extremely unstable, Jack transformed into an unbalanced monster who only cares about getting stronger to exact revenge. Jack is an incredibly determined and stubborn person; he simply doesn't know when to give up. His excessive training would be suicidal, were it not for the steroid cocktails from a mad scientist that are part of his regimen. His skeleton has been surgically restructured several times to make him larger. He doesn't know many techniques and often fights head-on. Jack doesn't care if he has to sacrifice his own life to achieve his goal, saying he has always been prepared to die if he suffers a serious bodily injury. Jack generally acts like a wild animal, so he also enjoys biting his opponents. He has a brother named "Baki Hanma," whom he cares for deeply, as they both share the same goal. After realizing he couldn't win with brute force alone, he created an original fighting style, "Goudou," which consists of using his signature move: the bite. Jack now seems more mature, calm, and serene.

Appearance: His physical characteristics include brown eyes, a penetrating gaze, short blond hair, and rather thick eyebrows. He usually wears a blue t-shirt, long jeans, or shorts. Jack is an extremely tall and muscular man, currently standing at 2 meters and 43 centimeters. He also possesses a titanium denture that replaces his teeth.

Power: Being the son of Yujiro, the strongest being on Earth, he can kill bears with his bare hands and has a high pain tolerance.

Yujiro Hanma ("The Ogre")

Role: Main antagonist and Baki's father.

Personality: Arrogant, sadistic, and confident; considers himself the strongest human being on Earth.

Fighting style: Brute force combined with total control of the human body.

Highlight: His mere presence is enough to intimidate any fighter.

⚡ Jack Hanma

Role: Baki's half-brother.

Personality: Obsessed with strength; willing to sacrifice everything to surpass Yujiro.

Fighting style: Direct combat, extreme strength and brutality.

Highlight: A tireless fighter who represents "strength through pain".

Retsu Kaioh

Origin: Master of Chinese Kenpo.

Personality: Honorable, disciplined, and philosophical.

Fighting style: Traditional Kenpo, focusing on technique and fluidity.

Highlight: One of the most respected fighters; a symbol of classical martial arts.

Katsumi Orochi

Origin: Son of Doppo Orochi and master of modern Karate.

Personality: Proud and courageous; seeks to prove the strength of his style.

Fighting style: Impact Karate — powerful and direct strikes.

Highlight: Constantly improves, even after brutal defeats.

Doppo Orochi

Origin: Founder of the Shinshinkai dojo.

Personality: Wise, disciplined, but impetuous in combat.

Fighting style: Traditional Karate with strength and precision.

Highlight: Known as the "Tiger of Karate"; a respected veteran in the underground world of fighting.

Goki Shibukawa

Origin: Master of Aiki-jutsu.

Personality: Calm, observant, and witty.

Fighting style: Redirects the enemy's force; wins through technique, not brute force.

Highlight: Proof that skill can overcome brute force.

Kaoru Hanayama

Origin: Young Yakuza boss.

Personality: Quiet, loyal, and proud.

Fighting style: Pure instinct and immense physical strength.

Highlight: Known for its incredible durability; a symbol of resilience.

Gerry Strydum (Friend of Yujiro Hanma)

Origin: During the Vietnam War, he attempted to ambush Yujjro but failed. After that, he developed an admiration for him. He provides logistical support.

Pickle

Origin: Prehistoric man revived in the modern world.

Personality: Primitive, curious, and guided by instinct.

Fighting style: Instinctive and animalistic; fights like a predator.

Highlight: Represents natural strength and the pure instinct for survival.

Dr. Tokugawa Mitsunari

Role: Organizer of underground fights.

Personality: Enthusiastic, wise, and slightly eccentric.

Function: Observes and records the fights, serving as a mediator between the fighters and the audience.

Oliva Biscuit ("Mr. Unchained")

Origin: The most powerful prisoner in the United States.

Personality: Vain, confident, and extravagant.

Fighting style: Brute strength and superhuman muscle control.

Highlight: Man with the most "perfect" body in the series; even the government fears him.

Mohammad Alai Jr.

Origin: Son of the legendary boxer Mohammad Alai.

Personality: Proud and charismatic, but inexperienced when facing true warriors.

Fighting style: Boxing adapted for real combat.

Highlight: It represents the conflict between modern talent and ancestral strength.

Kaioh Kaku

Origin: Ancient Chinese master, over 140 years old.

Personality: Serene, wise, and modest.

Fighting style: Highly refined Chinese Kenpo.

Highlight: Despite his age, he possesses reflexes and technique that surpass most young fighters.

Kureha Shinogi
Who is he: Kureha is a world-renowned surgeon, known for his ability to perform impossible surgeries and for having a deep knowledge of human anatomy. Role in the series: He is not only a doctor but also a formidable martial artist who challenges Baki Hanma. He frequently treats injured fighters after brutal battles, but also conducts experiments and fights due to his interest in testing the limits of the human body. Style: He uses his medical knowledge to fight, focusing on pressure points, vital organs, and manual cutting techniques.

1. Shinshinkai Dojo

A traditional martial arts dojo, with light-colored mats, the smell of wood, and strict discipline; a place for intense training.

2. Tokyo Park

Open area with trees and benches; stage for sudden fights where warriors appear out of nowhere.

3. Underground Police Gymnasium

A hidden center for extreme training, featuring a metal ring and heavy weights; used to test strength beyond human limits.

4. Maximum Security Prison

Cold corridors, reinforced cells, and a tense atmosphere; where dangerous fighters are kept and major confrontations take place.

5. Arena of the Ancient Colosseum

A secret underground tunnel with a circular stone arena; a place for bloody combat and brutal displays of power.

6. Osaka Night Street

Narrow alleyways filled with neon lights; a place for unexpected encounters and quick fights.

7. Iron Body Academy (your requested gym)

A modern gym with huge dumbbells, heavy machines, and a training mat; space for extreme physical development and tough sparring.

8. Military Hospital

Clean environment, but with a tense atmosphere; used for fighters' recovery after brutal fights.

9. Training Camp in the Forest

Isolated area with dense trees, huge rocks and rivers; used for wild training and extreme body enhancements.