Board Thread:General Discussion/@comment-26006155-20190425222457/@comment-26006155-20190511220607

PersonThePerson wrote: Wait, if Beta Gaster didn’t get his memory erased, how come no one remembers him?

Sans and Papyrus were the ones who went back in time together, so they’re the ones who should have obvious time duplicates.

Alpha Gaster is a stealthy ghost. He may have invaded the Beta timeline later on, but besides his followers few people would know this.

To the monsters of the Beta Timeline, Gaster was a hero who died in the process of researching how to break the barrier, somehow. The details of exactly how are still lurking somewhere deep in the Core, unknown to the public. And Beta Gaster is the only Gaster they know of.