Spoiler alert for anyone not this far in the series. In D.Gray-Man Hallow it is noted that the Millennium Earl says that he wants to bring Allen Walker back to the Noah side. The 14th. But Allen than a dit if he comes back he will kill the Earl and become the suivant Millennium Earl. That shocked everyone. Than Allen Walker regains controll of his body. And says i am an Exorcist born and raised for the Black order to stop and kill you. There is little hints that Allen might be the 14th a Noah. Watch D.Gray-Man Hallow episodes here. If your that far in the series yet. --->
link on KissAnime.com. Ypu can watch it also on RyuAnime.com and GoGoAnime.com. So enjoy. I hope this helped toi out a little bit. :3
