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
"D.Gray-man" follows Allen Walker, a young exorcist who fights against evil demons known as Akuma. Allen is part of the Black Order organization, which aims to stop the Millennium Earl from destroying the world. As Allen uncovers his own mysterious past and develops new powers, he must navigate a complex world of deceit, betrayal, and supernatural forces.
D. P. Walker was born in 1914.
Thomas D. Walker was born in 1956.
D. P. Walker died in 1985.
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.