By the way, when looking for it, you can see the eye moving in the middle of the rift. Also, it's easier to see in motion, rather than pausing over and over. Plus, though it's very very faint, it seems to be a little more realistic than Bill generally is, so it looks closer to the All-Seeing Eye (Eye of Providence) on…

If you look VERY closely at the dimensional rift at the end of episode, you can see a really faint image of Bill Cipher moving slowly across it. I can't believe I actually noticed it, to be honest. I can't find anyone else who's noticed this (not even on the wiki or this comment section). Anyway, my point is, this…