Zebra is described as the most savage of the Four Heavenly Kings, someone who does not stop until even the 'seed' is annihilated. A single attack from Zebra caused all the scars on Match's body. Of the four kings, he only gets along with Toriko, who seems to understand him the best, as Sunny and even Coco blatantly refused to see him for his release when suggested to do so by Toriko. It seems to be more of a rivalry than a friendship and they like to compete with each other whenever they get the chance. Zebra especially hates "cocky people", and is shown to be hotheaded and belligerent, always wanting to fight or compete with Toriko.

Zebra is a violent, cruel fighter, especially when enraged, and cannot see a bad opportunity to pick a fight. After his release, he went back among the other inmates of the Honey Prison and killed the ones who had been talking about him behind his back, with names provided by Chupali. He reveals that he hates liars more than anything (partly because he can detect lies instantly through a person's breathing and pulse) as he considers lying "the biggest way to get cocky" because "Talking shit behind their back while you spout out some insincere flattery means you're a conceited bastard who thinks nothing bad will happen just as long as no one finds out".

Even compared to Toriko, Zebra has a massive appetite and little regard for how much he eats, having eaten 26 entire species into extinction. Due to his massive destructive capability, Zebra is considered as a Class-A dangerous creature, and his reputation alone is enough to make warring countries cease fighting each other and unite in order to defend against him. A regular person normally would run in fear of him and his release from Honey Prison had temporarily sent the world's economies into chaos.

Mansam is the IGO's Development Bureau Director and Gourmet Research Facility Chief, as such he has the 3rd highest rank within the IGO, with authority only below the President and Vice President. He is an old friend of Toriko's and the other Four Heavenly Kings and often treats them like family. He also runs the IGO's First Biotope, a facility where 30% of the world's gourmet foods are made, and also clones long extinct animals and performs selective breeding..

The father of Baki and Jack Hanma. He is the strongest creature in the world, and is known to have mastered all styles of unarmed combat. His repertoire apparently includes all of the well-known fighting styles (such as karate, boxing, taekwondo, judo, jujutsu, wrestling, street-fighting, and so on) as well as some more esoteric ones (such as the udonde or uzunde style, an actual system used in the Motobu style of karate). He has been fighting on the battlefields, using only his bare hands, since the age of sixteen, when he fought against both American and Vietcong in the Vietnam War. Since then, it appears that he has obtained respect from the American forces, and has begun fighting as a kind of mercenary for them. It is said that when he stopped fighting for survival but for pleasure the image of the demon's face appeared on his back.

Yujiro Hanma