Board Thread:General Discussion/@comment-26006155-20190617222636/@comment-26006155-20190703125909

You may be onto something about Deltarune being related to The Darkest Experiment. As I mentioned earlier, Deltarune might be what's left of the Alpha Timeline, after Alpha Gaster has gained Seven Human Souls and become godlike.

Whatever DeltaRune is, it's a world related to yet removed from Undertale. A mirror universe in many ways. And the Donation Box and the Gaster Followers seem able to warp between them.

Sans used to be very close to Gaster. Closer than anything. They both came from the same amazing world together.

Sans had access to all of Gaster's technology, carrying weapons displaced from space and time.

Yet Sans warped to the past with Papyrus, leaving Alpha Gaster behind.

And yet, despite every indication that Sans is a decent person who considers the monsters friends and does what he can to covertly help Frisk.. Sans is haunted by something, and carries a linger darkness inside him.

Sans has killed Flowey in other timelines. Just for messing with Papyrus. Unlike Papyrus, Sans can kill. And has killed before.

Sans asks a serial killer whether bad people can change, if they just try? He's asking himself this question, wondering about his own fate.

Sans has done something in the past.. that haunted him to this day.

And Gaster dying again when Sans shows up in the past, doesn't seem like a random event.

It's hard to think of any character who *could* kill Gaster... other than Sans.