Lavi (ラビRabi?) is a cheerful 18-year old red-haired Exorcist of mixed race. He aims to become a Bookman, a person who records the hidden history of the world, and has been trained from a young age to achieve that goal. Lavi is the 49th alias he assumed after casting away his real name to reach that goal. He works along the Black Order just to be close to the events that must be seen, but slowly becomes more attached to his Black Order friends, and his original Bookman self is constantly being clouded by his growing care for them. He has a habit of annoying Kanda and teasing Allen. In recent chapters, he and Bookman were kidnapped by the Noah Clan and parasites from the Noah were put into Lavi in an attempt to get Bookman to give them information about the 14th Noah. His anti-akuma weapon, simply named Tettsui (鉄槌Iron Hammer?) and referred to as Ōzuchi Kozuchi (大槌小槌Big Hammer, Little Hammer?), is capable of growing and extending to undefined sizes and lengths.Although this affects its weight, this does not affect Lavi. The weapon allows him to use "seals" that control several elements of nature. He is voiced by Kenichi Suzumura in Japanese, and in English he is voiced by Jason Liebrecht from episodes 13 to 26 and episode 40 and on, and by Chris Patton in episodes 27 to 39.