I've never liked C.C. she does nothing and I just don't find her attractive. Kaguya and Tianzi are a no, since I don't like loli. Lakshata is pretty hot. Shirley, Milly, Sayoko, everyone else are all hot too.
But Kallen is great. She can fight. She's got an incredible body. And I think she's really cute. Red is sexy, but at the same time, I'm probably the only one, I find her cute too.