Jackal is a notable antagonist encountered early in the Fist of the North Star narrative, serving as the cunning and ruthless leader of a violent biker gang known as the Warriors. He is a tall, muscular man with long, messy dark hair, a mustache connected to a goatee, and a single hoop earring in his right ear. His typical attire consists of a fur jacket, often worn over rows of dynamite, along with furred arm braces that conceal hidden blades, reflecting his deceptive and prepared nature.

In terms of personality, Jackal is distinguished from typical outlaws of the post-apocalyptic world by his intelligence, caution, and pragmatism. His core philosophy for survival is to avoid picking fights with opponents who are clearly stronger. This principle is demonstrated when he observes Kenshiro's power and immediately orders his men to stand down, later killing two of them for provoking a fight they could not win. He is completely devoid of loyalty or emotional attachment to his subordinates, willing to sacrifice his right-hand man, Fox, as a diversion to buy himself time to escape. Beneath this calculated exterior lies a spiteful and sadistic cruelty, as he shows no mercy to the weak, fatally stabbing the elderly Toyo and cruelly planning to execute her orphaned children one by one in front of her.

Jackal's primary motivation is survival and the accumulation of resources, specifically water, which is the most precious commodity in the barren wasteland. His role in the story begins when he learns of a village with a functional well, cared for by a woman named Toyo. He patiently waits for Kenshiro to leave the village before launching his attack. After being grazed by a rifle shot from Toyo, Jackal stabs her and takes control of the village. He escalates his brutality by strapping dynamite to the village's children, using them as a distraction to flee when Kenshiro returns. This act directly leads to Toyo's death, transforming Jackal into a target of Kenshiro's vengeance.

His key relationships are entirely transactional. His gang members are disposable tools; he abandons Fox without hesitation, and later kills several of his own men when they attempt to betray him. In a desperate final gambit, Jackal flees to Villainy Prison, a maximum-security facility where he was once an inmate. There, he releases a fearsome, giant convict named Devil Rebirth, tricking the monster into believing they are long-lost brothers by using a stolen photograph. This act demonstrates his manipulative cunning, as he uses the Devil Rebirth as an unwitting shield against Kenshiro.

Throughout his arc, Jackal shows little development beyond an escalating desperation. He begins as a confident, calculating bandit leader but degrades into a panicked coward as Kenshiro systematically hunts him down, killing his men and leaving their bodies as warnings. His end comes when Kenshiro defeats Devil Rebirth, and the dying giant falls on top of Jackal, pinning him to the ground. Unable to escape, Jackal is consumed by an explosion from his own dynamite, which Kenshiro ignites.

Regarding notable abilities, Jackal is not a master of any formal martial art. In the anime adaptation, he refers to his fighting style as Nanto Bakusatsu Ken, or South Star Explosive Kill Fist, though Kenshiro suspects this is not a genuine discipline. Instead, he relies on stealth, trickery, and an arsenal of hidden weapons. His primary tools are concealed wrist blades, which he uses for quick, lethal stabs, and an extensive supply of dynamite, which he employs both as thrown grenades and as a suicide vest to threaten mass destruction. Despite his aversion to direct combat, he possesses above-average physical strength for a normal human, demonstrated when he crushes the skulls of two subordinates with a single hand gesture.