Board Thread:General Discussion/@comment-5808856-20150312001702/@comment-26537563-20160221135348

KillRoy231 wrote: Back to the topic of this post: (which isn't to say you can't continue the one about Stan)

So it's Bill. Usually he would have been the obvious suspect, seeing as how he's the villain, but I thought he was indestructible. Evidently there was one way to kill him. Also notice how Stan punches him out of existence while he's in the middle of getting erased

Of course I wasn't surprised to hear speculation of his return, but that'd be kinda difficult because this was the final episode, and nothing has hinted at his survival despite his backwards message. (the first character to die in Sailor Moon also says "I will return" as she disintegrates, but doesn't return)

I think I have one thing that may support the idea that Bill may have survived:

The fact that Stanley managed to recover his memories after they were erased (and in less than 3 days too)

I theorize that the memory gun (either by the device's own design or by Bill interfering) didn't "erase" Stan's memories, but REPRESSED them, allowing him to recover them later with some help. This leaves open the possibility that Bill somehow survived, and still exists within Stan's mind (whether he survived getting punched into demon bits by Stanley's subconscience, I don't know).