Buso Renkin's hairstyles

Because I have problems with drawing of hairstyles I decided to do some practice by drawing different series' character's hairstyles.

Part 2 Buso Renkin's women's hairstyles

These are from Nobuhiro Watsuki's Busou Renkin.
By the way, I didn't remember eight guys name and I couldn't find his name from books because I haven't got volumes 2-4.

I have started to think that should I draw their faces too?

Edit:
Now I know it! Eight guys name is Washio. Homonculus Washio