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Story cover for UnderWho by American_Glory

UnderWho

Reads 2,912
Votes 130
Parts 18
Time 1h 21m

Reads 2,912
Votes 130
Parts 18
Time 1h 21m

alphys asgore doctorwho gaster hotland papyrus rose sans snowdin thedoctor toriel tyler undertale undyne waterfall

The Doctor finds himself roaming around space and time, like usual, until the TARDIS takes him to the Underground. Once there, the Doctor finds out about the living conditions that all monsters are going through along with what the humans have done for them. When the Doctor first meets the Royal Scientist, all hell breaks loose. The Doctor just wants to help them, but they have a different agenda.All Rights Reserved

alphys asgore doctorwho gaster hotland papyrus rose sans snowdin thedoctor toriel tyler undertale undyne waterfall

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18 parts

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Short Circuit - An UNDERTALE Fanfic by ItIsComic

When Flowey discovers the unbound lengths of the power of Determination, he delves too deep into the makings of the world. When he tampers with SAVE files that were never his to begin with, time and space itself distorts and unravels, making pieces of the Underground collide and warp beyond recognition. All of a sudden, it's up to Flowey to become the unlikely hero and save the Underground before it falls into disarray, alongside his worst enemy who was in the wrong place at the wrong time. SAVE the world, and then you can SAVE and RELOAD again. Start - October 3rd 2025 End - December 25th 2025

Human Again ~ Undertale ~ SansxReader {COMPLETED} by fantafrisk

{THERE IS LEMON BUT READING IT IS OPTIONAL AND WONT AFFECT THE STORY} You've aspired to be a Monster specialist ever since the monsters had left the Underground. You leave on your first expedition to find as much information on each Monster as you could but then you're sidetracked when you wander into a cave, where the barrier once stood, though you didn't know it and helplessly wander into the Underground and meet a strange skeleton who really sparks your interest.

Bravotale by KCJoannaPlays

Undertale belongs to Toby Fox but my AU Bravotale belongs to me. So we start our journey through the underground with a human named Frisk as they traverse the underground they seem to feel like they are always being watched by someone or something because whenever they turn around all they see is a flash of red in the corner or there eye and after that nothing is there but they feel that whoever it is is going to always be watching them, who is it you may wonder Welp just read and find out And that my dear readers is a summary of how everything is the same yet different in the underground.

Reset {UNDERTALE} by emotistic-optimistic

*FEATURED STORY* As Judge for King Asgore Dreemurr, Sans has seen a lot of strange stuff. But when he wakes up with the feeling that something is completely wrong, he decides it's time to investigate with the only monster who could know what was happening: Royal Scientist W.D. Gaster.

× [Sickness] × || Undertale Fanstory || The Gasters/Skeleton Family by Nanaz_Nazmaki

One day, Sans fell sick. His sickness came out of nowhere and it cannot be cured no matter how many medicines Gaster gave him. Because of the sickness, Sans stayed still on the bed, just laying down or sitting on it under the blanket. The sickness can be seen from his face, half of his white skull was a little bit darker than the rest. Gaster and Papyrus had no idea what kind of illness Sans has, but they decided to take care of him no matter what, hoping that the sickness will soon gone either because of the medicines Gaster gave him, or disappears itself. But alas, The sickness gotten worse... -------- UNDERTALE (c) Toby Fox --------- This have nothing to do with Undertale's canon characters or story. This is just a fan story I made because the idea stuck in my head for a few while and I'd like to share it with all of you. So, enjoy!

The First Human [X Sans] {COMPLETE} by RaeTheStar

Imagine Undertale, but Chara never showed up. Chara wasn't the first human in the Underground. What if a glitch occurred, and you fell down instead? You fell into the Underground, but you cant remember your previous life. Now, you are surrounded by strange monsters, who have also never seen a human before. Will they let you live? [written 2017]

Timelines (A Doctor Who/Undertale crossover) by introverted-actress

What happens when a human gets tired of resets? When the thrill of a genocide route becomes boring and mundane? This is exactly what happens to Frisk. They spent so much time going through reset after reset that now they are growing tired of it. However, little do they know that their next timeline will be one of the most interesting they've ever had. When Frisk resets after an incomplete genocide, it captures the attention of a certain alien Timelord called The Doctor. He has to travel between dimensions to investigate this strange anomaly, but ends up with an adventure much more strange than he had initially anticipated. This timeline is breaking. The entire reality is being torn apart and it's up to Frisk, Sans, and The Doctor to stop it. (Disclaimer: I do not own Doctor Who or Undertale. The only thing I own is the plot line and the writing.) Cover art by @GodOfChaos3900

Sans Can Never Forget | Sans Angst by Minksxy

Your favorite skeleton is back at it again... and again... agagaagaag Sans has had enough. Everyone is at the surface, holding their own jobs and lives. But... Sans can't ever let it fade from his mind. The dust. The cries. Watching the screen with Alphys as a child just rampaged in the underground. He is going to snap. He is mad. He is sad. He can never forget. Cover is NOT mine, find it online if you want ::Rights for the original concept and media 'Undertale' are all under the jurisdiction of Toby Fox. All other workings are done by me.::

Most Powerful Monster by thundersnake2375

I'm writing a fanfic on the popular game, Undertale. You fell down into the Underground at the age of 11, but little do they know that you had secret powers, at least until you got carried away. None of the pictures or videos belong to me.

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Slide 1 of 9

Short Circuit - An UNDERTALE Fanfic cover

Human Again ~ Undertale ~ SansxReader {COMPLETED} cover

Bravotale cover

Reset {UNDERTALE} cover

× [Sickness] × || Undertale Fanstory || The Gasters/Skeleton Family cover

The First Human [X Sans] {COMPLETE} cover

Timelines (A Doctor Who/Undertale crossover) cover

Sans Can Never Forget | Sans Angst cover

Most Powerful Monster cover

Short Circuit - An UNDERTALE Fanfic

When Flowey discovers the unbound lengths of the power of Determination, he delves too deep into the makings of the world. When he tampers with SAVE files that were never his to begin with, time and space itself distorts and unravels, making pieces of the Underground collide and warp beyond recognition. All of a sudden, it's up to Flowey to become the unlikely hero and save the Underground before it falls into disarray, alongside his worst enemy who was in the wrong place at the wrong time. SAVE the world, and then you can SAVE and RELOAD again. Start - October 3rd 2025 End - December 25th 2025