User blog comment:B214/Question and Answers 3/@comment-4547267-20140720022758/@comment-77.253.97.42-20140721095719

and my promised quotes ofc from baka-tsuki

vol1 "They are able to promote to any other piece besides the [King] piece."

vol2 "It’s a magnificent view to see all 16 Devils including the [King]."

vol3 - no info

vol4 -"And it seems that, from the Maou-sama they receive their Evil Pieces to use for their servants. At that time, they become Kings." yea that quote don't work for me because it looks like the devil with peerage can be king

vol5- no info

now im confused i hope someone could claryfy it for me :(