Its related to the god as Arceus uses the power of the unknown when creating life.
The Sinto ruins or whatever they are called is a connection of two regions; Johto and Sinnoh.
Lastly, the unknown are letters or messages in some cases but they are also pokemon.
EDIT: Oh yeah, and from the original riddle, the unknown are all different and well, "unknown" so thats what it means by "Who am I?"
... nice one i thought no one would ever get the answer. congrats!!!!
Editquestion for the post bellow mine) really how would ytou know if it is i think it was just a congratulation kinda thing.