User blog comment:SomeoneYouUsedToKnow/SYUTK's Vol.4OP Impressions/Recap/@comment-4010415-20161022235706

Ren's hair is not in a ponytail, and those "stripes" you think you see on his cheek are just his hair in his face from the wind. The concept art itself even shows that Ren has let his hair down and no longer keeps it in a ponytail.

I think the guy with Mr. Schnee could be Ironwood, who grew facial hair. The hairstyle certainly looks rather Ironwood.

Weiss' scar was unaligned in volume 1, too. Though, the top half was more to the left and the bottom half was more to the right. In volume 4, the bottom half is more to the left and the top half is more to the right. They really can't keep her scar consistent, can they?

Maybe they didn't wanna reveal the other Grimms' redesigns yet?