Since I read this book up to the last one I cannot really remember the individualities of each book! So I guess I'll do a short bit on each of the characters and then do a longer one for Winter overall ... 
 My friend told me that this book is duller than Cinder, that is mostly filler and is more boring, but I have to disagree! In this book you meet three of the most important characters and a lot of important things happen! 
 When I first read about Scarlet, I did not like her. I even kind of felt this later in the book. This is because, to me, she seemed too much like Cinder, a typical 'strong female character' type person, and that she was kind of annoying too. And though I did like Wolf, I thought that her relationship with him was pretty ridiculous instalove (view spoiler)[even when she forgave him for being some mean Lunar soldier, as she did so too fast! Like he had been one of the main causes of her beloved grandmother being killed! There was some kind of flimsy feelings of 'fear' or something from her towards him, but by the next book that was pretty much gone and it wasn't really SHOWN anyway. (hide spoiler)] 
 We also meet Thorne, who I liked a lot. He seems to be almost the generic cocky type of guy you find in YA, but without the borderline abusive tendencies! (I do really like these 'generic cocky type of guy' except those abusive tendencies COMPLETELY put me off, so this was good.) Him and Wolf were quite different to each other as well, which I liked and was disappointed that I did not find so much in Cinder and Scarlet's characters. 
 One thing that I did not enjoy again was the setting. I have spent time in the South of France - just near Toulouse, in fact - and, to me, this book did not really show much of the 'frenchness' of the setting, as Cinder was mentioned not to do for New Beijing. (view spoiler)[It is kind of a relief that from now on the books are more and more set in space or in Luna, so that the lack of these elements is not so much noticed. (hide spoiler)]