Board Thread:General Discussion/@comment-26006155-20190820122909/@comment-26006155-20190922060330

My reponse to Jacky https://undertale.fandom.com/wiki/Thread:172707#210

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While the lower case Ture Lab entires may not actually be written in Comic Sans, the text conversation between Toriel and Sans at the end of the game shows that in his posts, he uses all lowercase letters, which is how you tell which one is talking at the time.

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A quick explaination of my timeline:

Gaster and Sans detect an anomaly in another world and timeline with the potential to destroy the universe. So they use the Silver Key Machine to warp to that place and investigate.

Gaster and Sans find themselves in the Underground in a world of monsters. They observe the monsters, and try to return home, but the Barrier blocks the return trip, breaking the Silver Key Machine in the process.

Gaster and Sans adopt costumes to blend into the monster world, and infiltrate monster society. Gaster's amazing otherworldly technology, far better than what the surface humans have, soon makes him a celebrity in the kingdom, and Asgore taps him as Royal Scientist.

No longer fearing the surface humans, the monsters make the migration to New Home, building The Core Complex with elevator links right to Asgore's castle and The True Lab. Gaster promises to find a way to destroy the barrier (which has to be done for Sans and him to return home), and the MTT appartments (later turned into a hotel by Mettaton) are set up for all the monsters working on these projects.

At the End of 201X, Chara falls, and Asriel takes her to New Home. At some point, she meets Sans and Gaster, and somehow her fate becomes entwined with Sans's. The doomed buttercup adventure seemingly still happens.

Gaster's attemtps to dimensionally bypass the Barrier, while providing interesting applications like the Dimensionallly-linked boxes, fail the main goal of defeating the Barrier. So Gaster turns his research to collecting monsters souls, using the power of human Determination to extract them.

Sans realizes, almost too late, that Gaster is planning to suck in almost all of the monster souls in a single huge blast of power (like Flowey does at the end of the game) to instantly down the Barrier, at the expense of destroy the monster's civilzation.

Sans stops The Darkest Experiment (or so he thinks) by killing Gaster, corrupting his own innocence in the process. As a result, the monsters are still trapped in the underground, and without Gaster there's no way to fix The Silver Key Machine, so not even downing the Barrier can return Sans home.

Sans and Papyrus try to save the future by traveling about ten years into the past, splitting the timeline to create The Beta Timeline, the main timeline of Undertale.

Sans hopes he can reason with the younger Beta Gaster, and that he will be more reasonable than Alpha Gaster and his Darkest Experiment. However, Sans learns that Gaster (Dr Andonuts) was actually corrupted by Giygas long, long ago.. and the alien's technology is the main source of Gaster's otherwordly powers. Andonuts sold his soul to Giygas long ago, and Beta Gaster is still determined to stay the course and genocide the monsters to break the Barrier.

It's impossible to stop Beta Gaster since he's a national hero to the monsters, and no one will believe Alpha Sans' tale that Gasters is aiming for their destruction. So Sans erases Gaster from the memory of all the monsters.. by repeatedly killing his old friend and resetting, until no one but Sans can remember him.

The monsters build the MTT memorial fountain to the unknown person who helped them. The monsters continue to operate the Core as a power plant, and Asgore spends years searching for a new Royal Scientist who can follow in Gaster's footsteps.

Although the details are still unknown, at some point during the original Alpha Timeline Sans teleported back to the Ruins after Toriel locked them, and made his way through the Ruins door as one of the many humans that passed through Toriel's lair.

Alpha Sans, now cursed with darkness in his soul, no longer has the innocence neccessary to get the best ending. So he resolves to help his earlier, more innocent self (Frisk) get a better ending by posing as guards by the Ruins Door, then giving Frisk as much aid as he can along his trip without blowing his cover as being a human trying to help another human.

Meanwhile, Alphys reads Gaster's notes, builds her own Determination Extraction machine to continue the monster soul collection research, and makes same decision that Gaster did, that a flower would make a great vessel for both human and monster souls.

The NIght of Gaster's Darkest Experiment arrives in The Alpha Timeline, and Alpha Gaster can sense Alphy's version of Flowey in the adjacent Beta Timeline, animating him as a pawn for his plan to get back at Sans.

Frisk, the younger version of Sans, arrives in the Underground, and finds Flowey, the puppet of Gaster, waiting for him there.

Flowey smiles, and calls Frisk his best friend.

Then tries to kill him, returning an old debt. And erase his memory from the world instead.