The youngest Advenna Avis immortal. His guardian, Ferment, tortured him to test the limits of immortality. Czeslaw manages to devour Ferment, ending his suffering. Unfortunately, he learns from Fermet's memories that he was simply being tortured for Femet's own self-satisfaction. As a result, Czeslaw becomes paranoid and trusts no one, making it his mission to devour other immortals before they can devour him. In the 1930s it appears he cares little for the lives of others, even requesting that a large group of people be killed so he could find an immortal among them. However, after meeting Isaac and Miria and being forgiven by Maiza, he stops hunting other immortals and moves in with Ennis and Firo. In the 1970s, he begins searching for the rest of the Advenna Avis immortals with Maiza to inform them of Szilard's death. In 2001 they find Elmer in a secluded European village. They return to New York while Elmer, Sylvie and Nile head to Japan to search for Denkuro.
Carol is the assistant to the vice president of The Daily Days; Gustav Saint Germain. She is inquisitive and is constantly awarded meaningless points for every answer she gives to the vice president, making her inquire "Out of how many?"
A feminine looking boy with long black hair, who Pico initially believes to be a girl. CoCo has sexual relations with both Pico and Chico. After inadvertantly causing some friction in their relationship, CoCo decides to distance himself from Pico and Chico, though they find him again at Tokyo Tower. Little is known of him, but he appears to be some sort of spirit. He is also the main uke of the three, but this can be reversed. (Source: Wikipedia)
John Drinker Cope was an admiral in the Free Planets Star Fleet and a member of the Year 730 Mafia. His middle name is not a nickname for a drunkard, but a legitimate, real name. This is an example of an ironic name as he was allergic to alcohol, and couldn't drink even one sip.
A member of Jil's party and Melt's assistant. She is also the party's cook.