Okay the character on the right is name Robin, he is acutally from an older manga called ZONE by the same creator as D.Gray-Man.

Zone is the pre-D.Gray-Man, and Robin is acutally the first allen walker. Zone appears in a piloted chapter of DGM. chapter #0000

I look at seperate pictures of Robin, Allen and Timcapi once each and then drew them by memory. it took me 5hrs to do so pleas comment