Undyne Stories

゛𝘩𝘦𝘩. 𝘤𝘢𝘯'𝘵 𝘩𝘢𝘯𝘥𝘭𝘦 𝘢 𝘭𝘪𝘵𝘵𝘭𝘦 𝘫𝘰𝘬𝘦, 𝘤𝘢𝘯 𝘺𝘢?゛ ִ ࣪𖤐 sans x socially awkward! reader . yes, a sans fanfic in t...

One human. One lazy skeleton. A decade of a friendly relationship. Living together with a skeletal brother and other monster colleagues. That's when a new bloom of emoti...

Sans was never a "Good Guy", he smiled, joked, helped the inhabitants of the Dungeon. And yet. He felt like he was stuck in a gray routine, the same scenario o...

[∆lice is belong to Kaaatie](did I spell that right?) Your name is (Y/N) and you're siblings with frisk and ∆lice but she had ran away to the forest and never to be seen...

A group of friends are taking a hike, but, when a storm comes, and they're forced to retreat into a cave, where their plans completely change. Originally going on a hike...

***CLOSED UNTIL FURTHER NOTICE*** Cover photo drawn by FURTINIYA27. Just like my main series of stories. Only this time, they're requested by you; the readers! :D Yes, i...

Ask or dare the Undertale and Super Mario characters!

: ̗̀➛ 𝐩𝐚𝐩𝐲𝐫𝐮𝐬 𝐱 𝐫𝐞𝐚𝐝𝐞𝐫 🖇️🫧 ❝ ʸᵒᵘ ᵐᵃᵈᵉ ᵗʰⁱˢ ʲᵘˢᵗ ᶠᵒʳ ᵐᵉ? ʷᵒʷⁱᵉ! ❞ ˚₊· ͟͟͞͞➳❥ in which y/n decides to create an indie game to show their appreciation and...

[season one] [Y/N] had always struggled to put effort into anything, despite the immense potential simmering beneath the surface. Ever since that fateful day when everyo...

A sequel to my previous story, Integritale. Please enjoy! All feedback is very welcome!

I made another one! An AU with a couple changes. Mew Mew, Dummy, and Napstablook working for Mettaton, Papyrus having been adopted by Asgore, Undyne part time running a...

Y/N L/N, lost after the disappearance of his sister and the death of his father. This pain caused Y/N to be quite the uncaring individual... not helped by his past mista...

There had only ever been Sans and Papyrus, right? So when monsters make it to the surface, where did Cairo come from?

Humans and Monsters have always been enemies but they never pressed enough to kill each other on a massive scale. For the past thousand years the situation between the t...

IM ONLY PUBLISHING THIS BECAUSE I NEED TO. MENTALLY. LMAO

What happens if Chara got woken up when Frisk fell? What if Chara joins Frisk on their journey? What happens when Frisk starts killing? What will happen to Chara?

Clover doesn't give up his soul because justice still needs to be delivered. The Wild East, and later practically the entire Dunes, declares independence. They declare...

Side quest time i guess... Silly chapter count: 3

After she falls into the ruins of the underground, a little wolf must adapt to the new world around her, make peace with her own demons, fight a psychotic human, and...

Nobody knows who the Riverperson is... nobody but a single Skeleton erased from space and time. So when he's pulled out of the Void, what secrets will be told? What is t...