Godhand : An ex-mercenary of the sinister Red Scorpion organization. Upon uncovering the true significance of the ancient ruins in regard to immortality, he severs his right arm as a means to leaving Red Scorpion, believing that his own plans for the ruins would make up for the sacrifice. Sharing some of what he knows with a powerful organization, he garners an ally that provides him with a new right arm along with the means to establish his own company dedicated to uncovering the secret of immortality. At the same time that he acquires a new right arm, he learns from his research teams that the EHRGEIZ stone may be the key to the ruins and the secret it holds. His growing ambition leads him to join the EHRGEIZ tournament in an attempt to gain possession of the weapon.

YoYo Yoko : Yoko's father is an explorer who teaches archaeology, and her mother is an expert in Kishiboujin ryu Jyujutsu. At age 10, her parents divorced, leaving her to be raised solely by her mother. Although still in high school, her talents in Jyujutsu have been acknowledged by the ICPO (Interpol) which enable her to participate in their hand to hand combat research team. One day, she received a letter from her estranged father, entrusting her to carry out the duties necessary to acquire EHRGEIZ.In addition to this, she has been ordered by the ICPO to enter the tournament to investigate suspicious activities surrounding EHRGEIZ.

Prince Doza : His motto is, "I’ll destroy anyone who stands in my path!" Each day, Doza seeks a more powerful opponent. However, in the world of Kickboxing, he is already without equal. Able to defeat his opponents with his bare fists, Doza has become bored and is in need of a challenge. In the midst of his unrest, he receives word of the EHRGEIZ tournament, where weapons, psychic powers, and projectile weapons are permitted. Thrilled, he is determined to test his skills. Although he has no interest in the secret that EHRGEIZ holds, his fighting spirit is fueled by the appearance of opponents that are more powerful than he has ever imagined.

Sasuke : Although it is evident by his appearance that he is a Ninja, Sasuke’s true identity remains unknown. Presently, he works as an agent for Red Scorpion, but since he has a mild case of amnesia, he cannot remember his true name. However, during a mission in which he was to assassinate the adventurer, Koji Masuda, he notices a mysterious stone embedded within a broken sword held by Masuda. Believing that this precious stone will enable him to recover his long lost memories, Sasuke aims to acquire the legendary weapon, EHRGEIZ.

Lee Shuwen : Known as the master of lethal Kempo, Lee holds the power and technique that can kill a man in a single strike. It has been said that Lee, founder of the Hakkyoku Ken, was killed some time ago through lethal poisoning. However, through the power of a legendary elixir found in the tomb of the first emperor, Lee has miraculously been brought back to life. Not only did this elixir bring him back to life, it is also making him younger as time proceeds. At this rate, he will ultimately become younger and eventually return to the void. In an attempt to avoid such a fate, he embarks on a mission to acquire the true key to immortality. Thus, he begins his journey to uncover the mystery behind the legendary ancient ruins.

JoJo : As an infant, Jo survived an airplane crash in the Amazon while sustaining only minor injuries to her head. Raised by wolves, she gained physical strength that exceeds and surpasses normal human capabilities by as much as 3 times. Following the death of her "wolf" mother, Jo became known as the "Man-eating wolf girl", and is eventually captured and imprisoned. There, she exhibited uncontrollable hostility towards her supervising officers. Having heard about this girl through various rumors, Red Scorpion scouts her and gives her the name, Jo. She is given direct orders by Red Scorpion to seek the EHRGEIZ without knowing or understanding the reason why.

Dasher Inoba : Inoba is a prominent wrestler and a disciple of Karl Schneider, the founder of EHRGEIZ. He is also a member of the EHRGEIZ supervising committee. With the recent death of his master, Inoba discovers a note left behind by the late Schneider which suggests that he had been investigating the connection between the stone embedded within the EHRGEIZ and the ancient ruins. Ever since laying eyes upon the mystical stone, Inoba has been fascinated by its presence. Compounded by his urge to obtain the stone and to uncover the mystery behind his master’s investigation, he is determined to get his hands on the legendary weapon.

Han Daehan : A master of Tae Kwon Do and a young action star without need of a stuntman, Han is a popular lad amongst the public. What the public does not know is that his right leg is actually artificial. During a movie shoot a year ago in the Middle East, a mysterious cloud of black smoke engulfed Han's leg. Peculiarly, although his leg has disappeared, he continues to retain a sensation of its existence. As he continues to seek an explanation for this particular phenomenon, he stumbles upon information that similar incidents have occurred every few decades in the area containing the ancient ruins. Han is another who becomes drawn to the mysterious surroundings of the ancient ruins.