Allen Walker is the main protagonist and a reference to the series D.Gray-man. Allen is a former Exorcist and a member of the European Branch of the Black Order which he is now seen and classified by them as a Noah, the 14th. He is also currently the current host of the former Noah, Nea Walker. He is the adoptive son of Mana Walker, the elder brother of Nea Walker. Allen was also the former apprentice of the Exorcist General, Cross Marian. Allen has mostly been seen with Timcanpy on his side.