Before joining Red Shield, David was the sole survivor of a chiropteran attack on his special forces squad. His father was also a member of Red Shield and was one of Saya's victims in the Vietnam incident. It is implied that he, along with Joel, are the only members that are descended from a line of Red Shield operatives. He is aware of Saya's past life and wishes to use her in the struggle against the chiroptera. David's red crystal item is a cross. David tends to be straight-faced and serious, with a cold personality. However, he also assumes an unofficial guardianship of Kai and Riku, and would be instrumental in helping Kai come to terms with what Saya is and with Riku's conversion to a chevalier. He seems to take a particular interest in helping Kai grow up to be a strong man who can support Saya and Riku as their brother, despite their unusual natures. When the Red Shield's headquarters are destroyed and Saya is believed to have gone down with it, David sinks into a deep depression and becomes an alcoholic. Kai helps him get back on his feet, though, and he returns to his duties slightly more cheerful and able to smile than he had been before. During the investigations into one of Cinq Flèches's lab, he finds Julia and she tells him something about the research they are doing. He talks to her briefly again at Amshel's party, and lets her know that she will always be welcome back with the group. Towards the end of the series, Dr. Collins tries to murder Julia, but David protects her, getting critically wounded himself. Julia keeps vigil over him in the hospital, and after he recovers they begin a romantic relationship. At the end of the series, Julia is pregnant with his child. (Source: Wikipedia)
Wina Lightning is the listening officer of the Silvana. Gifted with a perceptive hearing, she is tasked with matching the acoustic signature provided by Disith to that of Exile. She trains herself by continuously listening to the different acoustic signatures present in the Grand Stream, from the sound of a rainbird flock to the signature of a Disith battleship's remains. During the Silvana's final attack run at Delphine's base ship, she is able to hear Alex Row's final words before he dies with the base ship's destruction. (Source: Wikipedia)
Ralph Wednesday is the courier who is initially responsible for delivering Alvis Hamilton to the Silvana. After receiving his mission, Ralph is relentlessly pursued by the Guild and is mortally wounded. On the day of the 75th Norkia Cup race, his vanship crosses path with that of Claus and Lavie's. He asks the two to complete the mission in his stead and acts as a decoy to cover for their escape from the Guild. Ralph has an elder brother named Mikhail, who is also a vanship pilot. (Source: Wikipedia)
Supporting character in Karakuri no Kimi.
Sei's older sister whom Sei greatly respects. Kotaro commented that both Sei and her do not like to talk much. The Princess has lived for a very long time and is also a descendant of the chaotic bloodline. She resides in the Sacred Precinct with Crow, where Jiro and Kotaro previously stayed at. She was sad to see him go, so Kotaro consoled her by saying he will write to her when he reaches the Special Zone. Despite her quiet demeanor, she apparently has a short temper and while she enjoys Kotaro's company, if Kotaro does something that angers her, the Dark Princess does not hesitate to hurt him. Her powers are great enough to warp and change the very weather surrounding her. -wikipedia
Delphine Eraclea is Dio Eraclea's older sister and head of the Guild. A run-in between her and Alex Row in the past has left her the sole target of his vengeance, and one of his only goals is to personally kill Delphine. The Maestro is portrayed as a decadent aristocrat, callous and ruthless in her ways. When Luciola decided to let Dio escape, the Maestro, feigning interest in his plea to let Dio go free, killed him with a device (in the shape of a ring) that essentially disintegrated him. However, she did not go unpunished, for Alex managed to strangle her even though he had been tied in place by rose tendrils. Like her favorite flower, the rose, the Maestro is beautiful but dangerous. With her death and the release of Exile by Alvis Hamilton, the might of the Guild was broken, never to be restored again. t is unknown whether she has any real combative power of her own. Due to her impossibly immense oppressive influence, she really only needs her truly loyal subordinates to do her work, namely Cicada and his attack force. The only evidence of power she may have is in that she killed off the other families and remained as the sole house of the keys to Exile, which she stole the Mysteria from each house-except for house Hamilton's, the one she lost to Alex Row at Juan Carlos' auction at the price of 500 million Claudia.