Jack Hammer is a powerful Canadian pit fighter who appears at the beginning of Season 2 of the anime, the Maximum Tournament Arc.      ~!Baki&#039;s half brother, like Baki, must follow the Hanma path.!~   ~!He is the son of Yujiro and a Canadian soldier woman who Yujiro met in Vietnam, during the Vietnam War. Like Baki, he has since childhood wished to surpass his father Yujiro in strength and martial ability. His obsession to defeat his father led to extreme over training and overworking of his body which led to the deterioration of his body, claiming he will never be able to defeat his father with normal training. After his encounter with the Yujiro inspired scientist, he received from him steroids to match his overtraining and has gained his immense power. One of his main techniques is biting, and he can bite hard enough to easily crush wood with his teeth. He fights Shenusiba in round 1, Misaki Kengo in round 2 before beating the unbeaten Andre Andov Garrand in round 3. In round 4 he fights Gouki Shibukawa and fights Baki Hanma in the finals of the Maximum Tournament where he congratulates his brother for a well fought victory. Afterwards, he takes on his father and is soundly defeated. Makes an appearance in the &quot;Search of our Strongest Hero&#039; series and battles against the Russian convict Sikorsky and Mohammed Ali Jr. Is treated by Kureha Kosho by having his limbs extended, making Jack Hammer even bigger than when he fought in the maximum tournament. In the English dub, his name has been changed to Jak Xamma (pronounced &quot;Zah-mah&quot;). He reappears in Baki : Son of Ogre, in the military base where Pickle is captive, along with 7 others fighters (Doppo Orochi, Katsumi Orochi, Jyaku Kaiou, Retsu Kaiou, Kureha Shinogi, Gaia, Gouki Shibukawa). !~    source: Wikipedia 

The protagonist, Baki Hanma, trains with an intense focus to become strong enough to surpass his father, Yujiro Hanma, the strongest fighter in the world. Five of the world's most violent and brutal death row inmates are gathering to face Baki. Their objective is to taste defeat -- their unmatched strength and skill have led them to grow bored of life itself, and they now seek out Baki in the hopes that he can overwhelm and utterly crush them. In this crisis, other underground martial art warriors gather to fight by Baki's side: Kaoru Hanayama, Gouki Shibukawa, Retsu Kaioh, and Doppo Orochi. An epic showdown between violent death row inmates and Baki and his friends begins! 

(Source: Netflix)

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Demétrios Augustus is a Brazilian actor and voice actor.

A Mexican voice actor. He is the father of [Darhey Fernández](https://anilist.co/staff/189470/Darhey-Fernndez).

The second season of Hanma Baki. 
In Hanma Baki’s first season, the fighter Baki — the strongest high schooler in the land — trained in a prison against fellow inmates, defeating a giant praying mantis and formidable opponents like Biscuit “Mr. Unchained” Oliva and Jun “Mr. Second” Guevaru. Now, Baki is back and gearing up to battle Pickle, a perfectly preserved prehistoric man so powerful, he once preyed on dinosaurs. If Baki can take down Pickle, his final matchup will be with his all-powerful father, Yujiro Hanma. 
(Source: Netflix)

Baki trains for the the final showdown between him and his father.

The second season of Baki. 
 
Weakened by the poison from his last battle, Baki Hanma finds himself on the verge of death with no salvation in sight. However, after Baki's friend, Retsu Kaiou, brings him to China, he learns about the centurial Raitai Tournament, where the fiercest warriors fight to be crowned as the strongest martial artist in all of China. 
 
As it is now allowing entry to foreigners, Baki is informed that he will have to compete in the tournament as it holds the cure to his illness. Unfortunately, Baki's father, deemed the "Strongest Creature on Earth," is participating too. Baki 2nd Season details the events of the grand Chinese tournament, as well as Baki's encounter with the eccentric yet powerful Mohammad Alai Jr. 
 
(Source: MAL Rewrite)

The story revolves around Baki Hanma and his quest to proclaim himself as the strongest grappler in the world, thus taking the title from his father. Baki also fights to gain the trust of his overly psychotic mother. 
(Source: Wikipedia)

BAKI: THE SEARCH OF OUR STRONGEST HERO is the official name of the 4th saga in which Baki will find strongest enemies in his path, and the way to challenge his dad once again, and this time&hellip; To lose is to die. 
Hanma Baki (named &ldquo;Wild Fang&rdquo; by his father) is a boy born under an unlucky star. Since the day of his birth, Baki has been rigorously training at all kinds of martial arts, strengthening himself at his father&rsquo;s command. For he must obey his father&rsquo;s rule that at his &ldquo;coming of age&rdquo; Baki surpass his own father, Hanma Yuujiro, &ldquo;the most powerful creature walking on earth.&rdquo; Baki&rsquo;s life has been nothing but trouble. This has given Baki a wild nature and convinced him that &ldquo;to be the most powerful&rdquo; is his way of life. Tenacious and fearless under all adverse conditions, Baki continues his training looking for new masters and new challenges to strengthen his personality and become &ldquo;the strongest man on earth.&rdquo; That road is a lonely one and Baki experienced the cruelty of his sick dad in a move that would change his life forever.

Baki, a great grappler needs to live up to his name being the son of the the greatest grapplers of all time: Hanma Yujiro. At the Shinshinkai Organization's private arena, anything goes and the odds are always stacked against you. Current champion of the urderground tournament he fight to defend his title against the worlds strongest and best martial artists, including "the beast" his own father Yujiro.
 
(Source: Anime News Network)

[Wiki (jp)](https://ja.wikipedia.org/wiki/坂口候一)

**Non anime roles:**
- Xu·Gmun·Ba - Kamen Rider Kuuga: Special Chapter (TV Special)

Baki is bored. After the conclusion of the epic battle between father and son, he continues to fight in the underground arena and train nonstop, but he always has to suppress his yawn caused by the overbearing boredom. No amount of stimulus or danger can bring excitement to him at this point.
 
Now, with the inclusion of the Prime Minister of Japan in the loop, a massive cloning project is attempting to clone Miyamoto Musashi, one of the fathers of martial arts in Japan. Another fight of historical proportions awaits Baki! (Source: MangaHelpers)
 
Includes chapter 197.5

Who will be crowned victorious in the ultimate fight between the strongest high schooler on earth and the successor of the Niko Style? 
(Source: Netflix Anime)

After more than 2,000 years, Nomi no Sukune's successor is born. This time, Baki will challenge the God of Sumo. 
 
Note: The chapter count includes an extra chapter.

This time the series is about Jack Hanma, the brother of the current main character Baki. The Baki Rahen series focuses on the character of Jack, his own path in life and his constant struggle to gain more and more strength.

Baki Dangerous Zone is an 18 page tribute to the Baki the Grappler series. It was created by Sako Toshio as part of the series' 25th anniversary. 
Hanayama Kaoru and Hanma Yuujirou bet on a match between Jack Hanma and Katsumi Orochi. The gamble is presided over by Yakou Hikoichi.