|Zero in his Night Class uniform :)|
Zero Kiryu (錐生 零, Kiryū Zero?) is unique being both a Vampire Hunter and a vampire. Yuki's close friend and the only other Cross Academy Guardian, he was trained to be a Vampire Hunter by Toga Yagari. Zero carries the anti-vampire gun called "Bloody Rose”. Zero lives with Kaien Cross and Yuki, after being bitten by a pureblood vampire who also murdered his family. Due to the attack, Zero developed a deep hatred and distrust of vampires, despite originally being a gentle character by nature. Matsuri Hino described Zero as exemplifying her justice side.