A mysterious 'child' who even villains are afraid of. To be frank, no one actually knows how old they are, what their gender is, or where they come from. They just know that seeing them means certain doom. Are they even real?
The answer to that is yes, this is a living person. But, they're so shrouded in mystery that no one seems to know them as anything other than 'them'. It seems as though shinobis from all over the map may have overhyped themselves though, creating legends surrounding this strange figure that might have exaggerated their true origin.