He was just born as a sociopath.
Well he fed his papa cake made with detergent cuz he was curious if his papa actually couldn't taste or smell & the said papa nearly died & after that the other papa did everything humanly possible to get greyson fixed, when he realized that he can't be fixed he used to lock him up in the basement to save others from greyson
Sure explains a lot
that's crazy...
what on earth did this man live through during his childhood to turn out this way like he actually needs therapy....