He refuses to hold back against his opponents and, speaking of behavior, he prefers to act like a wild animal rather than a true fighter, as especially shown how he bites his opponents during their fights, making him even more animalistic. Jack doesn't care if he has to sacrifice his own life to achieve his goal, saying that he's always been prepared to die if he gets a body strong enough to defeat his father. He doesn't know many techniques and often fights head-on. He is too obsessed with beating Yuujirou and avenging his mother, to the point where he is blinded by that dream. He trains too much for his body to handle, forcing him to resort to steroids and other medical methods in order to keep his strength growing steadily. Also, it can be said that he is sometimes too confident in his strength. Even having half his face bitten off by Pickle and waking up in the hospital twice, the second time from a severe coma, he still gets up and goes right back to it. He's had his skeleton surgically restructured multiple times to get bigger. His overtraining would be suicidal, if not for a mad scientist's steroid cocktails being part of his regimen. Jack is an incredibly determined and stubborn person he just doesn't know when to quit. After taking super steroids that made himself beyond unstable, Jack turned into a monster without balance who only cares about becoming stronger to take revenge. Jack's driving force is wanting to defeat his father, Yuujirou Hanma, to avenge his mother who was raped by him. 3.2.1 Most Evil Death Row Convicts Saga.In the fifth manga series, he is also known as the 'Biting Cyborg' (噛みつきサイボーグ, Kamitsuki Saibōgu). His ringname is Jack Hammer (ジャック・ハンマー, Jakku Hanmā). In the English dub of the second anime series, his name has been changed to Jack Xamma because of dub issues (pronounced 'Zah-mah'). Like his brother, Baki Hanma, he has since childhood wished to surpass his father in strength and martial ability. He's a pitfighter from Canada and the son of Yuujirou Hanma and Diane Neil, a Canadian United Nations operative who Yuujirou met during the Vietnam War. Jack Hanma (ジャック範馬, Jakku Hanma) is a fictional character from the Baki the Grappler series. I never once planned to live a long life! I've long been ready to exchange the strongest body ever for death.

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