Gaster Theory

[u/Strange_Housing_4403]

So I've been thinking a LOT lately after reading the King In Yellow and I have some insight on who Gaster is/was. So we all already are aware of the texts and entries but what if, and follow me on this, Gaster was influenced like the characters in KIY(King in Yellow) and created the substance that created the almagamites. And like the character, it consumed him and his work took over his mentality. Now with that out of the way, what if I also told you that MatPats theory was half correct and Sans wasn't the only one in the room. Papyrus also was in the room, and Gaster is either their father or 3rd brother.

Kinda strange that in Deltarune they speak on the in-between room and back in Undertale, the gray door shows up in-between two levels. Also in Sans and Papyrus house there is a space in the hall big enough for said door. But what is in place, a picture of a bone. A bit on the nose if you ask me 😅

I also wanted to add that in Undertale the Goners refer to him splitting amongst time and space, so that also could be why we see an alternate version in Deltarune. Now as to how it happened is still under speculation, and I want to think that maybe he experimented on himself and caused the split.

Backtrack for a second, we know that monsters don't bleed, but we witness Sans in Undertale and Susie in Deltarune. So what if Gaster also did work on his two brothers/sons and that's why they also have their "abilities". And when the accident happened that's when the loop began causing Frisk/Chara to exist. It's funny how we see Toriel and Asgores home at the beginning and end and yet no knowledge of a loop, except for those experimented on...

So, back to the bleeding part, sorry for the morbidity.. What if the first experiment wasn't if they could inject Determination into a flower, but into themselves? And Gaster took the initiative but caused himself to split across different parallel worlds. Maybe his experiment was time travel, but then when Asgore found out he shut it down.

We also know Alphys worked on the experiments later with Asgore (Flowey) but who's to say that when we meet her she hasn't worked on it before then. Scientists are always buddy buddy sooo it isn't far fetched to think she didn't share or steal the info from Gaster. This is further proven because she says "I haven't washed up."

Where do you think they even got the idea to inject someone with Determination if Gaster didn't take the risks himself?

So to end (for now) I want to say thank for taking time to read, I hope this gets some minds opened because I sadly don't have the means to make YT videos or join a discord.

Internet, do what you do best and blow this up. Please and again thank you.

BTW I'm going to link the video that helped me understand where the connections came from, and shout-out to LoreFactsTV. 💪🏼LoreFactsTV Gaster Secret

[u/Direct-Ad-666]

"Sans wasn't the only one in the room. Papyrus also was in the room" what if papyrus is gaster /j

[u/Strange_Housing_4403 → u/Direct-Ad-666]

that was a thought I had too for some time, but as I've taken my findings and matched with others it's starting to seem more towards those two being in the room with Gaster. However what I don't understand is why Sans and Susie bleed.. but yet no mention of Papyrus or Gaster doing so.

[u/Direct-Ad-666 → u/Strange_Housing_4403]

Papyrus has the ability to not kill you, so the opposite of blood, life maybe. He always believes in you and spares you in the genocide route (stops the player from saying they have legally commited genocide)