Cactus Game Design Message Boards

What truly defines a unique character? Can two cards with different brigades, names, verses and art still be the same unique character?
I know that (King) David answers this to some extent, but allow me to propose a more extreme example (with full realization that it would never happen). Say, for instance, in addition to Peter (the purple one), there was printed a red card Simon and a blue card Cephas. All three of these cards are referring to the same man, the disciple of Jesus. Would they all be considered the same character for deck building/in play purposes? Would they all share the same identifiers? And, perhaps most importantly, how would it be declared that they were all the same (assuming they are)? Would it be on the card, or would players just be expected to know that they were the same?

One interesting case (well it may not be as interesting anymore, as the cards are rarely used, but they used to be) is Esau and Esau the Hunter. Players may not know offhand that they are the same unique character, but they are indeed. So like the Davids/Morg/an examples, you can have both in the same 50 card deck, but you cannot have both in play (controlled by the same player) or battle at the same time.