; : :The main protagonist, a master swordsman whose loyalty to his clan was used to manipulate him into murdering his own fiancée's father. He soon kills the man who arranged the plot, and with nowhere to go after his fiancée kills herself in despair, joins the Revengers who helped him. ; : :A soft-spoken handyman whose day job is as a
maki-e lacquerware artist. However, he secretly runs the Revengers, a
gairaigo corruption of the word "revenge," to help settle the blood debts of those who normally cannot afford to hire a hitman. His preferred method of killing is slapping a sheet of gold lacquer over the target's face until they suffocate. Yuen has a large tattoo of the
Virgin Mary covering his back, signifying his faith and his work for an underground Christian group. ; : :A former pirate and current doctor who treats patients from all walks of life, regardless of their ability to pay. He creates and maintains a secret stash of weapons for Revengers, and his massive frame allows him to use heavier weaponry than most people cannot use. ; : :A small,
androgynous boy whose angelic face hides a cruel and calculating mind. His favorite method of assassination involves using kite strings covered in tiny glass shards. ; : :A self-indulgent gambler who prizes money, alcohol, and women above all else. However, he is surprisingly compassionate when dealing with people he likes. His favorite weapon is a deck of
hanafuda cards with thin iron pieces embedded in them, which he throws at enemies' vital points. ; : :An underground Christian priest who preaches out of a half-destroyed chapel in Nagasaki, he gives spiritual guidance and funding to the members of the Revengers. ; : :A government official from the Nagasaki Magistrate's office who takes credit for cracking down on the opium trade within the region, and is known for cavorting with many prostitutes around town. He is quietly manipulating the Revengers for his own ends. ; : :Leader of the Nagasaki Trade Union who seems connected to the local opium trade. ; : :Chinatown gang leader attempting to root out the source of the opium in Nagasaki before it spreads into his country. An extremely skilled martial artist who can even take on Kurima bare-handed. ; : :A wandering priest who secretly runs a rival group of the Revengers and has fewer qualms about accepting jobs. His group includes Ippachi the Hawkeye, Yotaro the Shuriken and Sute the Tonfa. ==Media==