So in issue 10 of Batgirl Ethan Cobblepot gets a villain name in the last panel , Blacksun! This comic is drying up everywhere , so if you see any for cover snap them up and sit on them. However I think that Batgirl 6 is the one to get especially the Francis Manapul variant as this is the first appearance of Ethan and not a lot of those cover B's around, Poison Ivy covers generally do well . Both good picks though if you can find them cheap.