Quick theory about one of the characters in the game, feel free to confirm, deny, or have this remain a mystery.
THIS MAY INVOLVE SPOILERS FOR ANYONE NOT UP TO DATE IN THE GAME -- YOU HAVE BEEN WARNED
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My theory, Arcadean, is that Gramps is either The First, or one your previous cycles who recovered all the memories of his previous versions.
As I believe it would explain a lot about how he knows what he knows, why he is so powerful, and seems to be able to predict the future. Yet the few times you do something presumably different from the choices of your previous cycles, he ends up somewhat surprised, impressed or unsure. As he had never seen the choice made by.. Well, by himself