Kain is a killer without mercy. An A-1 class criminal who was responsible for the destruction of 12 planets and over 250,000 murders, Kain was finally captured by the Galaxy Police, and at the cost of his own life, the Jurai emperor. He was then sealed up in a subspace prison and locked in the subspace room at Galaxy Police headquarters. But 100 years later, Kain broke free and destroyed the G.P.H.Q., and crossed over 26 years in the past to kill one of the direct ascendants of those who imprisoned him - Achika Masaki. (source: Absolute Anime)
Kaon, also known as "Kaon of the Moon Spiral," is the Absolute Angel Murakumo (a reference to the mecha/deity Ame no Murakamo from Kannazuki no Miko.) A student from the Higashigetsu FÅ«ma Witch Academy, she stages attacks on KÅ« and her friends by order of Mika, although she does not seem to feed on the energy of innocent bystanders as Tarlotte does. Himiko usually appears with her. Despite the fact that she is Mika's 'trusted sword', she harbors a deep affection for Himiko, although she initially denies that their relationship is of a romantic nature. Kaon (æŒéŸ³) is derivative of Chikane Himemiya (å�ƒæŒéŸ³), her alter ego in Kannazuki no Miko and has been said to be Chikane's reincarnation. She certainly displays a strong desire to protect Himiko, even at a cost to herself, just as Chikane did for Himeko. She has her Absolute Angel mark on her left arm. At one point, Mika removes Kaon's own mark to place her own, after having had her subjected to a torturous process to increase the power of Murakumo and to restrict Kaon to only being able to draw energy from Mika. These events apparently change Kaon's personality and sever her emotional bond with Himiko, to the latter's great distress. Later events show, however, that Kaon's true nature and affections still exist underneath the damage done to her by Mika's torments. Her mark is restored when Himiko kisses Kaon, expressing her love for her.
At first Marlok's bodyguard, Ryu and the others fight Kahn more than one time. He often gets into funny situations because of his clumsiness. source: manga, video game
A mysterious man described as a demon in human form that haunts the high-stakes mahjong tables. Nobody knows his true name, but he has come to be known as "Kai" (傀), a name with the Chinese characters for "Human" (人) and "Demon" (鬼). It is said that once you hear him say the words "Terribly Sorry", it is only a matter of time until your defeat. He is a Mukoubuchi; what true, lone-wolf gamblers are called.