Todd Haberkorn voices Allen Walker .
He was just born that way and when Mana attacked him it became activated and then when he almost died it went into a stronger phase
if you are referring to when the dark order threw him in prison, it was because he is a member of the noah clan. dun-dun-DUN(dramatic music). it turns out that mana(the person who raised allen) was the brother of neah(the 14th noah) and when neah died his memories went to allen therefore making allen the 14th noah.
he is 15
At the related link below.
Kanda's full name is Yu Kanda.
Allen Walker!! :D -Lavi is awesome too! so is Kanda! X3
Towards the end of the 19th century, Allen Walker officially joins the organization of Exorcists that destroy the beings known as Akuma; mechanic weapons made by the Millennium Earl with the suffering souls of the dead. Allen has both a cursed eye and an anti-Akuma weapon as an arm, bearing the power of "Innocence", a gift given to him as an apostle of God. Allen, along with his fellow Exorcists must put a stop to the Millennium Earl's ultimate plot that could lead to the destruction of the world and all who live on it.
D. P. Walker died in 1985.
D. P. Walker was born in 1914.
Thomas D. Walker was born in 1956.
before he loses his innocence, its just called "innocence." only after he regains it and it reforms is it called "Crowned Clown."
Allen D. Beemer died in 1909.