Board Thread:Manga/@comment-29919227-20160909220906/@comment-24407809-20160909223416

Well, Grisha seems to be the same age in the photo as he was when he was found by Keith (maybe even younger), and he spent twenty years inside the Walls, so the kid would be at least 20 by now (probably a bit older). It's hard to tell how old Zeke is, but he seems to be somewhere in his 20s-30s.