Any good Japanese last names?

In my fanfiction for Tokyo Mew Mew, my character is a Snow leopard, I am still debating on a first name. Either Sherbert, Yo(as in Yogurt) or Nana(Banana) with the middle name of Yuki. But on to the point. What is a good Japanese last name that relates to the cold, or winter? It can't be anything close to Yuki since that's her middle name. Thanks for reading! And make sure it doesnt sound stupid or translate stupid! And leave a pronunciation. Thanks!~ Vanessa