I have Black Butler cards, but I have been dying to get my hands on hetalia - axis powers ones. My favorito in the Black Butler ones are Grell, who is the Jack, and Lady Ciel, who is the Queen.
Hmm, I haven't really been into collecting cards lately, so I don't even know which series has cards! However I used to collect inuyasha cards. I really wanted Sango but never got her.