Reborn as a Echo Flower?

Where am I!?And why the heck am I suddenly a blue talking echo Flower?

Ask Undertale [CLOSED]

Ask whatever you like! Remember to be respectful Pictures not mine. [NOW CLOSED] *Thanks for reading!*

Undertale Oneshots

This is a book of Undertale Oneshots (If you couldn't already tell). Well i accept requests so just comment what you want! (I'm still thinking about lemons) (Lol no jk no lemons) (probably slow updates)

Blades Of Determination (Chara x Demon Slayer AU)

THIS STORY IS DIRECTLY INSPIRED OFF OF A STORY BY @ReikoX0 please follow and support them!! 🪄 After accidentally ending up in a knew world, Chara adapts to it. Making knew friends and having knew experiences along the way! TW: Heavy themes/topics, vomit, gore, vioence, ect. You have been warned.

My Darling Reaper--The Witch and the Shinigami

Kid likes Crona, but will Crona trust him when he finally fesses up?

Compilado de one-shots - Undertale

Histórias sobre um universo magico.

Undertale Sister Scenarios

"Like Underfell, but a different AU."

Ｕｎｄｅｒｂｏｏｋ

↳ɴᴀᴅᴀ ᴍᴀɪs ʙᴏᴍ ᴅᴏ ǫᴜᴇ ᴏ ᴅᴏᴄᴇ sᴀʙᴏʀ ᴅᴀ ɪʟᴜsᴀᴏ↰ ─𝙴𝚜𝚝𝚊𝚛𝚎𝚒 𝚝𝚛𝚊𝚣𝚎𝚗𝚍𝚘 𝚒𝚖𝚊𝚐𝚒𝚗𝚎𝚜 𝚍𝚊𝚜 𝚜𝚞𝚊𝚜 𝚌𝚘𝚙𝚒𝚊𝚜 𝚍𝚘 𝚜𝚎𝚞 𝚎𝚜𝚚𝚞𝚎𝚕𝚎𝚝𝚘 (𝚙𝚛𝚎𝚐𝚞𝚒𝚌𝚘𝚜𝚘) 𝚏𝚊𝚟𝚘𝚛𝚒𝚝𝚘. 𝙴𝚜𝚜𝚎 𝚕𝚒𝚟𝚛𝚘 𝚜𝚎𝚛𝚊 𝚍𝚎 𝙿𝚊𝚙𝚊𝚢𝚞𝚜/𝚂𝚊𝚗𝚜 𝚇 𝚁𝚎𝚊𝚍𝚎𝚛! ─𝙾 𝚕𝚒𝚟𝚛𝚘 𝚜𝚎𝚛𝚊 𝚏𝚘𝚌𝚊𝚍𝚘 𝚎𝚖 "𝙼𝚊...

Mercyplates - Crashing Down

2-P notices something off about the lab, which concerns Gaster when he sees that he's right. Something isn't the same. And between the returning parental feelings and Asgore worrying for his health, the Royal Scientist isn't sure what course of action would be safest. A Mercyplates fanfic. Handplates was made by Zarla...

ʜᴀɴᴅᴘʟᴀᴛᴇs : HOPE [COMPLETE]

You were created after Sans. Papyrus was created after you. Your name was: Y/N. You and Papyrus and Sans were subjects to be experimented on. You felt alone in this. Papyrus and Sans was the only thing that kept you determined. You and Gaster were kinda really close. Will you ever get to go to the surface? Ever go ou...

Undertale little sister

You are Sans and Papyrus little sister (Y/N) ( sorry if it is bad this is my first story ever so I hope you like it)

Sans reacts to ships!

Sans the one we know and love will state his opinions on ships! WARNING CUSSING!!

Raising Papyrus {UNDERTALE FANFICTION}

Sans is 18 Years old now, His dad got killed in a lab accident and all that's left of him is a small baby skeleton. Sans is filled with DETERMINATION to raise his brother. Enjoy!

Old Times (Baby bones Sans & Pap)

This is about Undertale (again) and its when Asgore was just becoming king, Toriel was getting married to Asgore, Dr. Gaster existed, many memories. Sad. Okay? Just.Sad. In this story this is when everything goes down. Gaster dies, the king and queen break up, and last but not least, what Sans and his little brother d...

undertale- the beginning

Gaster and Sans's back story. this will be exciting, terrifying and depressing.

[INCOMPLETE] Determination. (Chara X Reader)

Chara. You befriended them, now what?

Soul of a Weapon

What if Sans only got Papyrus away from Gaster? What would happen if Alphys found him trapped years later? Can they teach him to be a normal monster, or will he forever remain a weapon?

InSansity(undertale)

(book 2/2. last book: secrecy) Sans finally reveals his past. but who is W.D Gaster?

A Three Way SWAP

Papyrus finds himself curious about the machine Sans has behind their house. When he accidentally activates it, he ends up sending himself to the world of Underfell. Meanwhile, Underfell Papyrus is sent to Underswap and Underswap Papyrus finds himself in Undertale. Now they must find a way to swap back to their own un...

No More (Undertale)

For years, Papyrus knows, Sans has had nightmares. Horrible nightmares, nightmares that leave him crying in the dark, crippled in the mind, and barely able to function in life. And that's why Papyrus stays so happy, so bright, for Sans, to keep his brother going through the hard times. But when Papyrus starts having...

Reset {UNDERTALE}

*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.