Riser's Knight dressed in armor and armed with a sword and dagger. Karlamine is a expert swordswoman and is capable of using fire and wind-based attacks and is known as the Knight of Flames (炎�騎士 Hon� no Kishi). According to Ravel, she is a sword maniac like Yuto with a similar sense of honor, as she was unhappy that her fellow pieces were used as sacrificial pieces but endures it as it was at Riser's command. She was able to fight on par with Yuto before Issei gains a new ability in the form of the Boosted Gear Gift, where she is defeated by their combination attack. (Source: Wikipedia)
Riser's Pawn. Defeated by Yuto.
He is the chairman of Hachimitsu Private Academy. Unlike the underground student council, faculty, and the school management, who are conservative about the school's traditional laws, he is more liberal and open minded about the idea of the school admitting boys; however, his ideas often put him into conflict with his daughter Mari who is the president of the underground student council. He has a rather dark secret where he is fond of surfing around porn sites. His main fetish are Latin American asses, much to the disgust of his daughter, Mari who also knows his secret.
Birthday: August 8th Height: 173 cm (5' 8") BWH: 96/61/89 Rank: Low-class Devil Role: Rook Race: Reincarnated Devil (Former Valkyrie) Power: Norse Magic First Appearance: Volume 5 Originally Odin's bodyguard. After the battle with Loki and Fenrir, Odin leaves her in Issei's town. She then gets persuaded by Rias to become her servant. She remains in Kuou Academy as a teacher. Rossweisse is known to be a very serious person. She has a tendency to buy things at sales when they're cheap, allowing Issei to coin for her the nickname "The 100-Yen Shop Valkyrie." Rossweisse makes her first appearance in Volume 5 as Odin's bodyguard, reminding him of his status and telling him not to look at Serafall Leviathan lecherously. Odin responds by mocking her for not having a boyfriend. She later reappears in Volume 7 during Issei and Akeno's date, scolding them for being in the motel during the day and telling them that high-school students should stay home and study. She later helps in the battle against Loki and Fenrir and sealed Loki with her spells. She was abandoned shortly after that by Odin much to her horror, claiming that she was fired. She was then persuaded by Rias into becoming her servant, seeing all the benefits she can get by becoming a Devil and having a stable job of becoming a teacher at Kuoh Academy. In Volume 9, she accompanies the second-year students to Kyoto. When Issei attempted to peek at the girls, Rossweisse attempted to stop him only to become another victim of Issei's Dress Break, much to her horror due to the fact that her jersey (which was bought under discount) was spoiled. When Issei sees Azazel drinking in the morning telling him that it is not good for health, Rossweisse strongly agrees and lectures Azazel on the fact but was cut short after having being teased by Azazel on not having a boyfriend. Angered by that, she snatches his alcohol and drinks all of it, making herself drunk. This action, however, would indirectly cause her loss when she fought against Heracles. In Volume 10, she and Koneko fought against Misteeta Sabnock and Gandoma Balam at the Rating Game between their masters, winning the match. She, Xenovia, and Yuuto Kiba would then face Sairaorg Bael but lost to the latter. In Volume 11, Rossweisse goes back to Asgard to train after her defeat in Kyoto and in her match against Sairaorg but reminded Issei of his mid-term test and prepared a question paper for his reference before leaving. In Volume 12, she returns after learning various defense magic from her country, which allows her to defend against attacks that are 10 times more powerful than Heracles' Balance Breaker. She also told Rias and her comrades about the rumors that she heard in her homeland regarding the Vampires, that a certain noble Vampire house captured a Longinus possessor which lead to battles between Vampires. After Issei successfully passes his Middle-class Promotion test, Rossweisse like all the female members of the Occult Research Club, decided to go out on a date with Issei. During the events of Volume 14, Rossweisse participated in the meeting of Mephisto Pheles in regards to making a pact with a Magician due to the Gremory group's recent popularity. Later, she participates in the meeting with the Vampires from the Carmilla Faction. She, along with with rest of the Gremory group (excluding Rias and Kiba), later team up with the Sitri group to rescue Ravel, Koneko, and Gasper after the three were taken captive by the Magician Faction. In volume 17 Euclid Lucifuge offers her to join him, as he is interested in her research about 666. He later tries to Kidnap her but is stopped by Issei and Rias. It's revealed that Euclid was interested in her because she resembled his sister, Grayfia. Rossweisse is highly proficient in the use of Norse magic, specializing in long-range and bombarding attacks. She is capable of using ice, fire, water, lightning, wind, thunder, light, summoning, and explosive based magic. Upon returning from her training in Valhalla in Volume 12, she starts to use defensive spells (using the trait of Rook) which are strong enough to easily shield against Balance Breakers.
Race: Dragon First Appearance: Volume 6 Being born from nothingness, Ophis rarely shows any sort of emotion, only wanting to get rid of the Great Red and return to the Dimensional Gap to obtain "silence." Issei describes Ophis as an honest and pure Dragon who is naive. Azazel indicates Ophis has changed because of her interaction with humanity, but how is never described. Some time in the distant past, Ophis was born in the Dimensional Gap, and lived there as its home. Eventually, long ago, Ophis left the Gap, but when it attempted to return, found that the Great Red had taken up residence there. Before assuming her current form, she used a different guise in the form of an elderly man. At some point before the start of the series, Ophis became the leader of the Khaos Brigade. Ophis' name was mentioned in Volume 4, in which Ddraig calls her "the strongest existence." She made her official appearance in Volume 6 in the Underworld to look at the Great Red before retreating. She reappears in Volume 11 at the Hyoudou Residence along with Le Fay Pendragon, Fenrir, and Kuroka, wanting to observe Issei as he was having unusual growth of powers. Her powers were later stolen by Cao Cao and Georg who used Samael on her. At the end of Volume 11, she was kidnapped by Shalba Beelzebub with Issei rescuing her but receiving Samael's curse as a result. In Volume 12, Ophis and Issei were on top of the Great Red after he passed through the crumbling dimension they were both on, rescuing the two of them. She then used her powers on the Great Red's flesh to form a new body for Issei. When Issei returned to the Underworld, Ophis guided Issei by sensing where his friends were, telling him the directions on how to get there. Following the crisis in the Underworld, she moves into the Hyoudou Residence at the end of Volume 12 to continue "observing" Issei much to the shock of the other girls, as a part of her was used to recreate Issei's body with Great Red's flesh. In Volume 13 Extra Life, Ophis is seen playing with Rassei whom she has developed a close relationship with, even going as far as stating that she will train the young Dragon. As her name suggests, Ophis has the ability to manifest her powers in the form of snakes. These snakes have the ability to increase a person's power tremendously by consuming it. Another type of snake she creates can be used to bring out a Sacred Gear's full potential. While this can potentially lead them to achieving Balance Breaker more quickly, it can also break the Sacred Gear, killing the host. According to Ddraig, her true abilities are stronger than the two Heavenly Dragons combined. So much so that when her powers are reduced to level twice as powerful as the Heavenly Dragons, she feels "weak." Ophis is a true shapeshifter, able to alter her size, apparent age, physical attributes/characteristics, and even her apparent gender. Ophis also has the ability to unleash massive amounts of destructive power. However, since her powers were diminished by Samael, she cannot control these powers properly. Ophis can "bless" people, granting them certain advantages. These blessings don't seem to be of a type to negatively affect Devils. With Asia, the blessing has increased her compatibility with Dragons, while with Irina, it has increased her luck. (Source: Highschool DxD Wiki)
Is one of Issei's clients, a male bodybuilder who wishes to become a magical girl. He ends his sentences with "Nyo. In the Light Novel, he re-appears in Vol 06, when Vali and Bikou were talking with Issei about Diodora Astaroth, and confuses both Vali and Bikou, making them think that he is a Nekomata.
Kuroka is a Nekomata and a member of the Khaos Brigade's Vali Team. She is the older sister of Koneko Toujou, and an SS-Class Stray Devil who is one of the Underworld's most wanted criminals. Her greatest desire to live with Koneko again, which usually involves attempting to take her away from Rias' house by force.