misted-reality:

So I was pondering on D,Gray-man theories and it came to me;

What if ‘Gray’ is not only to do with the fact that Allen has a noah and innocence inside of him, but that he was once a Bookman’s apprentice as well?

Its not officially canon if Past!Allen is Bookman’s previous apprentice but we know that Bookman “stay unbiased at all times and remain completely neutral” Gray is between black and white so in a sense could mean in-between or neutral.

Hoshino confirmed that D. meant “Dear” in one of her interviews and that Allen is prophesied to be the “Destroyer of time.” so;

Allen, who was once a Bookman’s apprentice,was meant to be completely unbiased hence ‘Gray’ became close with Neah and Mana became biased and broke the Bookman’s rules. Had Neah become part of him before he died and in hence ‘destroyed time’ by de-aging and becoming “Allen Walker.” who possesses both innocence and a Noah inside of him. 

“Dear the Gray man, the Bookman’s apprentice and the destroyer of time.”

Or it could just be a reference to the Bookman clan in general, as they’re an important aspect to the story. Bookman has something to tell Allen judging from these panels.

I wonder.

Its a bit jumbled I hope it makes some sense.