Yuta is one of the "comrades". His power is to create an isolated space, in which nothing can either go in or out, including air. The first time it is seen used in the manga he uses it to isolate a whole parking lot, where he forces Taisuke to kill him to save all the people inside. Taisuke refuses to do so. when Yuta after that tries to commit suicide, Taisuke stops him. after that incident Yuta decides to travel with Taisuke to the north to save Hirose and Megumi.
Hideo Asou is a Catholic priest who is known to be traveling with Ron. Asou seemed to have been affected by the virus when it was "Nightmare Week" and he, Ron and another child were hit together by the virus. Asou gains the power of petrification, which allows him to turn people into lifeless stone statues merely by touching them, a process that cannot be reversed except by Taisuke's unique abilities. Asou uses this power in conjuncture with his skilled martial arts to get close to his opponents to touch them. When the child who has been infected attempts to hang himself, Asou tries to save him, but unintentionally turns the child into stone instead. When the other people see this they become afraid of him and lock him inside the church. Then he meets Katsumata and tells Katsumata to kill him. Katsumata uses his power and alters Asou's mind into working for him. After Hirose absorbs the "Heart of Akura" Asou kills himself by petrifying himself. (Source: Wikipedia)
Jun Tezuka first appears following Nami at her school and he is the second oldest male in the Tezuka family at 27 years old. He is a soft spoken individual, and apparently he has a "mother complex" according to Rei and Anzu. He is the second child in the family to acquire powers. His power appears to be the ability to control electricity. He and Rei are the only members of the family that join Taisuke on his assault on the US Naval Base housing the Heart of Akuro. He wandered throughout Asia in search of peace of mind and learned martial arts in the process, which he later taught Taisuke.
She is a friend of Sawako's from back when they were in high school, and they were both in the light music club together as part of the band Death Devil. She and Sawako used to try to outdo each other on the guitar. Her stage name is Christina.
Shinobu is a girl who lives with Meme in an abandoned building. She loves donuts from "Mister Donut." She was named Shinobu by Meme at the beginning of Hitagi Crab, suggesting her kanji name Shinobu (å¿�), having "heart" (心) under "blade" (刃), matches with her original personality. She appears to be an eight-year-old girl, but she was originally a beautiful vampire who had lived for more than 500 years. At the end of events of Koyomi Vamp, after Koyomi realizes that having saved his master from a certain death, leaded to a future where she will kill humans (the "portable food" she calls them) to ensure her survival, Koyomi revolts against Kissshot in a bloody battle to death, where Kissshot chooses not to use her full powers (in order to have a proper battle with her servant). Later on the battle it is revealed that she pretended to turn Koyomi into a human again, by letting herself be killed by Koyomi. After the shocking revelation, he cannot bring himself to kill his master who was giving her life for his, and who cared for him at the point of risking her life to save his (from sunburn) at the beginning of Spring's Break. But to prevent herself from eating more humans, Koyomi asked for help to Oshino Meme, who in the end tells that as a happy ending won't be possible for everyone, then everyone will have an unhappy ending! While Koyomi himself cannot return to be a fully human, Kissshot Acerolaorion Heartunderblade was left in a weakened condition (where she is no longer able to eat humans, and needs her servant's blood to survive) with no powers or traces of her original personality and therefore have to abandon her "Kiss-shot Acerola-orion Heart-under-blade" (ã‚スショット・アセãƒãƒ©ã‚ªãƒªã‚ªãƒ³ãƒ»ãƒ�ートアンダーブレード) name. Ever since "Tsubasa Cat" where she starts living in Araragi's shadow, she no longer needs to suck his blood on a regular basis in order to stay alive. She forms a physical connection with Araragi where they can feel each others emotions and senses. It is also later revealed that she can gain strength into an "evolved" form after sucking Araragi's blood more than the usual dosage, she does this in order to fight for Araragi when he confronts Yotsugi and Yozuru. In Mayoi Jiangshi, in the alternate timeline, Shinobu went berserk when Koyomi was killed by Black Hanekawa, feeling that she was somewhat responsible for his death, so she swore to destroy the world and created the Jiangshi that has been swarming the town. It seems that she truly cares about Koyomi and when she saw Koyomi was alive in the alternate timeline, she started weeping blood. In the end, Araragi simply states that he will die together with Shinobu. Her father named her Lola, however she went by the name Acerola. Note: Aya Hirano was only credited on a drama CD and not for the anime. Please don't try to add her as the VA for Bakemonogatari.
Yuujirou Kai (甲�裕次郎) is the vice-captain who has a tendency to be brash and impulsive despite being the oldest member. He normally plays with his right hand, though he switches to his natural left-handed style while using a racket with a reverse grip to use his "Viking Horn" shot, which curves before reaching the opponent's side. (Source: Wikipedia)
Mari's friend, classmate and roommate. She is a Hindu.