Every member of the Atasuki seems to be some sort of legendary figure. Such as Kisame being one of the legendary seven mist swords men. Sasori being sasori of the red sand and of course itachi the crazy ass guy who killed off his elite clan. I'm sure that the other members all have their own unique backstories from their villages and also the reasons why they left. I want to hear some back story about the leader of the Atsuki he probably has something very interesting.