All I know is that he's based on an old myth. A mythical hunter who boasted they could hunt any beast on the Planet.

[ Cloud doesn't know enough about the various myths surrounding him... The tale of Artemis, the Goddess of Hunting, falling in love with him sounds like it'd be right up Ayaka's alley. But it gives him an idea. Because now that they're here, laying beneath the stars talking about it? She's actually got him curious about it now. And not just because he wants to continue the story for her. ]

Maybe the MRU library's got books about that. I'll check it out.