Lavi (ラビ , Rabi) is the current alias of the current chosen successor of the Bookman Clan generally shortened as Bookman Junior. He is one of the main characters of D.Gray-Man and an Exorcist and member of the European Branch of the Black Order, though this affiliation only exists so he and his mentor, Bookman, can record the world history as it unfolds. "Lavi" is his 49th alias, with "Deak" (ディック) being his previous one. Lavi belonged to Marian Unit