Yoshina currently uses two techniques. His main offensive technique is "Melchsee's Lance". Yoshina creates a condensed sphere and releases it, relying on the indiscriminate targeting of "Melchsee's Door". Because the sphere is small, it gains enormous speed but loses a lot of power, which also is less taxing on Yoshina's mind. His second technique, "Melchsee's Vortex", can be used both offensively and defensively. Yoshina creates condensed spheres, each linked together with a line, allowing for greater control. In the defensive mode, "Melchsee's Vortex" forms a semi-sphere around him and absorbs all PSI attacks. In the attack mode, Yoshina breaks the chains linking the spheres and releases the spheres, causing them to splash around targeting PSI sources. He can also keep Melchsee's Door in one place by keeping it rotating, creating a flat disk used for close range offensive attacks.

Miyamoto Musashi or Shinmen Takezo (his real name), only at a very young age, embarked on a journey to become the strongest samurai only after being exiled from his own village. Musashi is the son of a samurai family, who's father is one of the most renown samurai across the nation. One of the foremost reason that drives Musashi to excel in sword-fighting, is his desire to overcome his father for all the harsh treatment given during his childhood and Musashi's incapability to rebel.
Musashi is unique in terms of his sword-skill for the unfamiliar movements and lack of style he use. This is due to the fact that he spent most of his entire time in the forest having been labeled as a demon child by his village for his demeaning and wicked nature. Frankly, the forest is his home and where his master resides.

The protagonist/antihero. Ogami Rei is a mysterious young boy about whom not much is known. Sakura first witnesses him burning people with a blue flame in a park; the day later he transfers to her school. When Sakura confronts him about his killings, Ogami reveals to her that he's in fact a "Code:Breaker", a secret government agent who punishes those who can't be punish by the law. His code number is 06, meaning he's the weakest member of the Code:Breakers. He believes strongly in the idea behind the Code of Hammurabi, often citing the quote "Eye for eye (目には目を, Me ni wa me wo?), Tooth for tooth (歯には歯を, Ha ni wa ha wo?)" and adding on "EVIL for EVIL (悪には悪を, Aku ni wa aku wo?)
Externally, Ogami is an aloof, uncaring person who is whole-heartedly dedicated to punishing evils and cares for not much else, but Sakura gets closer to him she realizes that his actions often belies his cruel words. Ogami's power lies in his left arm, which burns anything he touches with a blue flame.

Kaiman is the lead character of the manga. He appears to be the victim of a magic user, who laid a curse on his head.
Other than that, he has no recollection of his previous life. He has the head of a large reptile, with no other alternates in limbs or body. There are cross-shaped marks over each of his eyes.
It appears that despite having his head chopped off, he can regenerate it in a matter of time.