Is the Kid actually the Devil?
Okay look, we get how upsetting it would be if the Kid, aka Henry #2, wasn't actually Henry from another reality… or even human. It would make Episode 9, "Henry Deaver," feel like a complete waste of time. After all, for nearly an hour, the audience was given the heartfelt backstory of the Kid's life across the veil. This other timeline acknowledged him by name: Henry Deaver. Sure that was a mind-blowing plotpoint, showing us that Henry here had gotten lost in our world after the other Henry disappeared when he was just a boy. But what if that was all a ruse?
From the very beginning, Warden Lacey (Terry O'Quinn) was convinced the Kid was the embodiment of the Devil and kept him locked in a cage underground for 27 years. And even after Lacey took his own life, his replacement, Warden Porter (Ann Cusack), ended up coming to the same conclusion before stepping into the street where a bus full of prisoners mowed her down.
What if the Kid is actually the Devil? If you look at the clues the show has left along the way, and the rules that exist in this world, it starts becoming a very real possibility.
Clue #1: Like Ruth (Sissy Spacek) with her chess pieces, the Kid places mini-figurines throughout the world as he goes. But while Ruth uses her chess pieces as anchors to help her battle her Alzheimer's disease and stay in the present, the Kid's figurines almost feel as if they're meant as the opposite: human-shaped pieces, manipulating each and every character he comes in contact with, as if he's the player and they're the pawns.
Clue #2: When the Kid destroyed Juniper Hill and returned to the Deaver household, he shared a very odd interaction with Ruth. Of course, the series wants us to believe that Ruth's dwindling grasp on reality is to blame for the way this confrontation went down. But, if this really was Henry from a different timeline, why was he being so unbelievably creepy with his mother? Unless Ruth really isn't his mother. You know, it sure would be something if the Kid's end-goal was to isolate Ruth, ultimately pushing her to the brink while putting an end to Alan Pangborn (Scott Glenn) in the process.
Clue #3: This leads us to the constant reminders that the Kid had first appeared in Castle Rock 27 years ago. It's the same time-span between Pennywise's visits to Derry. And in 1991, Alan Pangborn originally did battle with the Devil when he wreaked havoc on Castle Rock as Leland Gaunt, the owner of the oddities store known as Needful Things.
Is it possible that, even though Leland Gaunt was defeated by Pangborn, using a sleight-of-hand magic trick, the Devil could've lived on in another man's body? More specifically: the Kid's body? If so, that would be one magic middle finger to Castle Rock's former sheriff. Needless to say, things just got way more complicated in Castle Rock.