Undertaleaus Stories

1.2K Stories

Our Pen by R3myR3ad3r
#1
Our Penby R3myR3ad3r
You're the Ink of your multiverse, and you don't even know it. Well, until you meet the Ink of another, along with Error. -NOTES- I made the cover! This obviously isn't...
An Interesting Reincarnation (Reader reborn as...) by AliceParadoxi
#2
An Interesting Reincarnation (Read...by AliceParadoxi
You wake up, finding yourself standing in a desolate grassy field, only the green grass had withered and died, leaving behind a dry, lifeless expanse. Above, the sky was...
New Purpose (US!Papyrus x Female!Reader) by OreoDaSkeleton
#3
New Purpose (US!Papyrus x Female!R...by ~Oreo~
Y/N, meets a new coworker that changes her life forever. A monster, doing his best to make a living after moving out of the underground. Sans is this ecstatic, cheerful...
~ Sans AUs x Reader OneShots ~ by AvocadoDragon
#4
~ Sans AUs x Reader OneShots ~by 🥑🐉
(Book gets better with each OneShot-) Requests are (Closed ❌), Thank you! I've started this when I was in 8th grade, because I've seen a few x Reader books and was like...
Jaune Error by CCKGISKMKGSRAD
#5
Jaune Errorby Core Jaune
Jaune Arc this man always wanted to be a hero like his ancestors but fate decided to mock the blond knight Jaune saved Cardin Winchester from the Ursa Major but Cardin d...
Completed
As ready as I can be since I'm dust...wait hold the phone! Pregnant!?  by KarmaAkabane425
#6
As ready as I can be since I'm dus...by Karma Akabane
(You know how it goes, someone from our world Ends up dead and becomes dust sans..but somehow pregangt, different things, different personalities etc
]Sanscest Oneshots[ by Leffee
#7
]Sanscest Oneshots[by Leffee
If everything went well - a bunch of oneshots with a bunch of ships. Rules and requests inside. Also please don't leave any suggestive comments, there's a reason why thi...
Bad Sanses x Reader: Parody Version by -Xenon-Aqlas-
#8
Bad Sanses x Reader: Parody Versionby Zarathustra The
These stories are somehow getting overrated. The villain crew and the negative guy himself: Nightmare Sans, falling head over heels over a character who just wants to im...
To Kill A Killer by RosesHaveThorns16
#9
To Kill A Killerby Rose Aurum
Nightmare's gang always knew that their job was risky, but they never expected to actually die. Then Killer was killed. Nightmare found a replacement quickly enough, bu...
Sanscest Pics~ by OnlyAiko
#10
Sanscest Pics~by Aiko but Stupid
Okay I'm only doing my Favourite ships so I won't be any taking requests. I stand my ground and would like it To stay that Way for as long as I stay on this App. ⚠️ALSO...
𝙻𝚘𝚟𝚎 𝚊𝚛𝚘𝚞𝚗𝚍 𝚝𝚑𝚎 𝚌𝚘𝚛𝚗𝚎𝚛 𝚜𝚝𝚘𝚛𝚎 by MerryJane8
#11
𝙻𝚘𝚟𝚎 𝚊𝚛𝚘𝚞𝚗𝚍 𝚝𝚑𝚎 𝚌𝚘�...by Bitxhy
(ᴠᴀʀɪᴏᴜs sᴀɴs ᴀɴᴅ ᴘᴀᴘʏʀᴜs ᴀᴜs x ʀᴇᴀᴅᴇʀ) ||ᴀɴᴅ ᴛʜᴇɴ ɪ ɢᴏ ᴀɴᴅ sᴘᴏɪʟ ɪᴛ ᴀʟʟ ʙʏ sᴀʏɪɴɢ sᴏᴍᴇᴛʜɪɴɢ sᴛᴜᴘɪᴅ ʟɪᴋᴇ "ɪ ʟᴏᴠᴇ ʏᴏᴜ."|| Life was merciful enough to grace you...
Darkness Is Nicer Than It Seems (Nightmare Sans x Reader) by Lollipopswirl99
#12
Darkness Is Nicer Than It Seems (N...by Lollipopswirl99
(Y/N) had a regular life. A normal job, home, everything. Sure she had her own problems like insomnia, nightmares, and no friends but that wasn't anything to special. T...
The Teenage Guild To Reincarnation by oO_GOLDRUSH_Oo
#13
The Teenage Guild To Reincarnationby ☆GOLDRUSH☆
Never did you picture yourself in this situation. Sure, you dabbled in the Undertale fandom and it's AU's, and you knew basic things about the more popular ones, but her...
My Anomaly (An Error Sans X Reader)  by nightmare597
#14
My Anomaly (An Error Sans X Reader...by Nightmare
When your sibling Chara goes missing you fear the worst, but life takes a surprising turn for the better when they release the monsters trapped underground. Living this...
Reincarnated as a Voice by IHamTiredAndBored
#15
Reincarnated as a Voiceby TiredAndBored
TW: Swearing and slight gore Y/N reincarnates in the anti-void as a Voice... Will he befriend error or will they make them hate their guts? And will they meet other peop...
Reborn as Error by Kiwi_Seal
#16
Reborn as Errorby Kiwi_Seal
Cover image made by me. Someone meets their end too soon and meets someone who gives them another chance to live a more fulfilling life. One that they would enjoy despit...
Killed it! {Reincarnated as A Killer Varient} by coolkidindahood
#18
Killed it! {Reincarnated as A Kill...by DaCoolest
⪼Beaten up and betrayed, {Name} dies an unfair death because of their best friend. Having their life and their brothers whisked away in a flash. ≫They find that they inh...
This life as Error Sans. by coolkidindahood
#19
This life as Error Sans.by DaCoolest
⪼A life where our beloved [Reader/REDACTED] died a very.. 'Fun' death. ⪼upon realizing their death, they'd realize that they reincarnated into error sans, a character th...
Frans pictures by Ruby_Cat1082006
#20
Frans picturesby Zhira
I found this pictures on deviantart,pinterest,google and Frans Amino