16 Works in Guardener (Undertale Yellow - Master Sword)
Listing Works
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Steamworks Resident: C10[ver] by Metal_Omegux
Fandoms: Undertale Yellow (Master Sword Video Game), Undertale (Video Game)
02 Jan 2026
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Clover awakens in the Steamworks, only to find themself suddenly a robot, designated C-10. Axis takes him around the Steamworks to meet everyone, and this place starts to feel like home. Still, something seems very off...
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The Weight of Responsibility by LeoHastLostIt
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
01 Dec 2025
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Clover's sacrifice had an impact on all of their friends, especially on Ceroba who now tries to change for the better. So when she came across another human who needed help, she took him under her wing without further thought. Little did she know this chance encounter was a starting point for her healing and a chance for redemption.
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Supernova by EmbretheWorld
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game)
22 Sep 2025
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Supernova - when a star runs out of fuel, its core collapses, resulting in an explosive demise.
The death of North Star and the rebirth of Starlo.
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Various AU and what if Ideas specifically around Undertale Yellow by Sammy_Narcias
Fandoms: Undertale (Video Game), Undertale Yellow (Master Sword Video Game), Deltarune (Video Game)
20 Aug 2025
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This is basically me just putting down what i think seems cool, cute or interesting to do as a story, I don't think i'm a writer so I encourage and insist anyone that wants to write down and use these as reference, inspiration and make good stories with what will be vague ideas that i will edit onto if i think i can add more info on each.
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Put on a Brave face / Fake Integrity you great disgrace! by LunaLeDragonet
Fandoms: Undertale Yellow (Video Game)
14 May 2025
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Flowey knows what Clover looked like as he sent warped versions of their murdered friends at them. He watched them sob and die to attacks that should have kept them down, again and again. He watched the yellow light drain from their eyes as they looked upon his cowboy puppet. He figures, why not lean into it? Give them a "happy ending" and see how they react when it's ruined! And so, in a world where no one had to die, a thorn is planted, and the heat of a star can only keep it down for so long...
(Fanfic made based off of the Meta Flowey Starlo sprite(which I vote we either call Meta Starlo or Withered Starlo. i have name ideas for the other sprites but this ain't about them), so, y'know. Heed the tags. He suffers a lot during this.)
(I reached 75 tags... I have to keep removing the ones that are just commentary to make room for new ones... And I'm less than 10 chapters in... Help)
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After Clover's adventure, Axis has a lot of time on his hands, and a lot of tasks to fill them with. Something odd happens while he's doing maintenance.
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Flowers are Fleeting, Feelings are Forever by FaceImplosion
Fandoms: Undertale Yellow (Video Game)
10 Dec 2024
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Led by curiosity and fascination, the Guardener delves into a world of flowers and their secret language.
A retrospective short story involving the bipedal Guardener, embodying remembrance for Undertale Yellow's first anniversary. -
Stay With Me by DiamondDeputy (EllaMayLowell)
Fandoms: Undertale Yellow (Master Sword Video Game)
01 Nov 2024
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Ceroba never thought this would actually happen. She isn’t ready. Despite spending every day preparing for this outcome, she still doesn’t know how to proceed. The anticipation, the unending ways something could go wrong, the dark and musty hall ahead, it’s all enough to paralyze her with dread. But pioneering this human through the Steamworks is the only way to rid her of her demons and monsterkind of their plight. So, she must find a way to see it done, without losing her life or her resolve.
(Or: A retelling of Clover and Ceroba's journey through the Steamworks, expanding on their optional interactions, natural dynamic, and opposing roles in the story)
Series
- Part 1 of Ella-May's UTY Retelling Collection
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Overgrown Fears by coffeeshroom_mp4
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
13 Sep 2024
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The Lil Bots get into a fight, as per usual. After looking towards Guardener for assistance — something that was completely unintentional — the four bots realize something that they should have found out long ago.
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thanks to you by BetweenDisorders
Fandoms: Undertale (Video Game), Undertale Yellow (Video Game)
03 Jul 2024
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On the subject of pleading, apologizing, giving far too many thanks, and other things Axis has never done before.
(Or: in which Axis, after Clover's death, finds a new purpose.)
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Axis X Murder Drones by Redacter
Fandoms: Murder Drones (Web Series), Undertale Yellow (Video Game)
23 Jun 2024
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(in hiatus)
What would happen if a little robot with the mentality of a 10 years old child whose power source is magic ended up in Copper 9?
Would there be any change in this dead world where only drones live?(This fanfic will be made with a translator and I will correct any errors may find, so if there is any part that is not understood I am sorry)
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Mothertale:Yellow by Anonymous
Fandoms: Undertale Yellow (Video Game), Mother 3 (Video Game)
05 Apr 2024
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(Note: The au's name is actually 'Red Sunflower')
The boy named Claus went to Mt. Ebott to find out what had happened to the missing children. -
Eleventh Degree Lockdown by TextyHFJO (Exi_M)
Fandoms: Undertale (Video Game), Undertale Yellow
27 Mar 2024
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El Bailidor and Decibat decide to visit Clover's grave again, but decide to take the Scenic Route through the Steamworks.
Mo breaks into the Steamworks again, somehow, to try and gather more White Plants, bringing the Shufflers along for the ride.
Mooch gets up to some mischief and ends up passcode-guessing the Steamworks Entrance.
Axis takes charge of the Steamworks due to the lack of proper scientists, but uh... kiiinda sucks at it.
Guardener is sad.
and, a Lockdown activated.
... Welp, they're all stuck for a bit, whoops.
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Or: These guys all didn't have enough screentime, and I really wanted to give them more.
OR or: A Half-Sequel to "What about the Others...? (What would they think?)", but featuring a bit of Crack lol
Series
- Part 3 of Texty's UTY Collection
- Part 2 of Post-Pacifist Minibosses
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What about the Others...? (What would they think?) by Exi_M, TextyHFJO (Exi_M)
Fandoms: Undertale Yellow, Undertale (Video Game)
25 Mar 2024
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Decibat stared at the note on the ground for a long moment.
Dalv had moved out of the Ruins a good month ago, it wasn't often that Decibat would get letters, seeing as it was the only one to not move out of the Dark ruins.
It much preferred the quiet, in all honesty... Though, lately it seemed a bit too quiet.
Maybe the Letter would hold answers...
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Or: How would the Minibosses and other Minor Characters find out about, and then react to, Clover's death.Series
- Part 1 of Texty's UTY Collection
- Part 1 of Post-Pacifist Minibosses
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A couple of robots try to rebuild after rudely being brought back to life.
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Axis is brought to Guardener’s greenhouse to watch the flowers bloom. They end up feeling a lot.