Board Thread:General Discussion/@comment-26815763-20141002235646/@comment-11051098-20141004204058

For that matter, most of the Sternritters never hinted at their letter. If I recall correctly, only 7 of those we know until now, H, I, J, L, O, S and V, actually stated their letter themselves, the rest were given "on screen". Otherwise, for the lack of introduction for Unknown, it seems Kubo either forgot it or maybe has some reason for it.