Lost in the Echo ((GASTER!PAPYRUS X OC)) - uuurmommmn - Wattpad

Lost in the Echo ((GASTER!PAPYRUS X OC))

Reads 94
Votes 10
Parts 2
Time 20m

Reads 94
Votes 10
Parts 2
Time 20m

alphys angst asgore asriel chara echoflower experiment flowey frisk gastertale humans monsters originalcharacter papyrus papyrusxoc papyrusxreader snowdin toriel undertale undyne

G was used to living a life of repeats, constantly going over the same game plays. The same friends. The same death. The same grief; so it was only natural for him to take a cautious step upon the discovery of the Echo Flower turned humanoid, unknowing as to whether she was harmless or hostile. 

His concern regarding the newly formed monster only intensified once his younger brother, Papyrus, becomes utterly enamored with her. 

~DISCLAIMER~
I DO NOT OWN UNDERTALE, ITS AU'S, NOR ITS CHARACTERS.All Rights Reserved

alphys angst asgore asriel chara echoflower experiment flowey frisk gastertale humans monsters originalcharacter papyrus papyrusxoc papyrusxreader snowdin toriel undertale undyne

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Undertale X Reader [In Remake] by Cat_Maipie

Let's get to the point shall we? So let's look at the list here... You're a... no information? Hm, interesting i guess, I'll have to base it off my observation. Whatever, you're a human, well kind of. You're a human and a monster at the same time, more like in between. Let's say... player? Better than nothing i guess. You're your own person. Sometimes you control frisk, sometimes you don't. You can also move through timelines, and also universes but that may be too risky huh? You'll find more about it soon... THIS CONTAINS VIOLENCE PLEASE BE WARNED! Lemons? Maybe. - #57 in sans 12/14/25 - #1 in floweyxreader 01/10/25 *** COVER : Credits to the person who made it GAME : Toby Fox

Reset (Sans x Older!Frisk) by error-code-707

There are some things you just can't take back. No matter how many times you reset. After breaking free of Chara's grip, Frisk decides to do one final reset before defeating Sans or proceeding to the throne room. But some memories last longer than others, and broken trust isn't easy to repair. Female, aged-up Frisk. Starts out canon and then diverges. Eventual Sans x Frisk. Undertale was created by Toby Fox. I do not own Undertale, nor any of the characters. Some violent action scenes. Cover art is by amazing artists at http://www.zerochan.net/Undertale,Fanart and http://www.zerochan.net/Chara+(Undertale),Fanart

Undertale - Fighting To Stay [Frans] [Book 3] by SepticGirl88

So, monsters and humans have been living together on the surface for quite a few years now... That's an accomplishment! No resets, no new timeline. Just a future continuing forward like everyone could have possibly hoped for. However, not everything is hopeful. You can't expect to live a life where everything is sunshine and rainbows. Even with no longer having the threat of someone like Chara, things can still happen when you least expect them to. You can't always have your "Happy Ending".

Chainsmoker [ Gaster!Sans x Reader ] by morrow-

Routine. The entirety of every living thing is dominated by it, human or monster. Everything HAS to be the same. It was in this that you were the exception. For you everything was new, every time line a detailed altered in order to satisfy your sadistic desire for a new ending, whether it be only a few details of dialogue altered or something else entirely. Monsters you once considered family you now butcher and slaughter without a second thought, after all, that's what the Reset is there for, right? And all at once it stops. Your small hold over the Underground is ripped away from you and you are thrown into a dying timeline, monsterkind's final attempt at self-preservation. You're alone, completely and utterly alone. Except one. And he has a bone to pick with you.

Cry of Bravery by thefastspark

(THIS IS VERY AU BASED. ASGORE / TORIEL ARE TOGETHER AND ASRIEL IS ALIVE. CW OF ABUSE / CHILD ABUSE, TRAUMA, AND DARK THEMES ARE PRESENT) It's almost been a decade since the war of the humans and the monsters had ended and five years after Chara's death. Centuries of conflict have left the Underground in a state of repair and despair. But, only hope remains for the Dreemurrs to fix the problem with the barrier without killing humans, as Asgore has promised to find a way to fix this with the help of his scientists. But, how can Asgore juggle both his duties as a king and to his family? Another problem arises when a human child mysteriously falls out of nowhere with strange abilities attached to him that make him very unpredictable. However, on the month that arrives, could it be coincidence that a human falls? Stay tuned for the Cry of Bravery!

(Sans x Reader) When Two Souls Meet by ZanaBSparrows

Sans has lived through countless timelines. He's seen the kid make friends with everyone, only to give up in the final moments. He's seen the kid killed, over and over and over again. Sometimes, he'd even done the killing himself. And no one ever remembers. Not even the kid herself. It's an exhausting cycle, one that never seems to end. But there's something different about this run. Another human's fallen down... the kid's sister. Please note the the story is primarily on Quotev, so updates to Wattpad may be late, or lag behind that of Quotev. The story also has the potential to become mature. (I haven't decided yet.)

Broken Timelines ✔️ by Meepaa

I WROTE THIS WHEN I WAS 15/16 I'M REALLY SORRY LADS Chara is stuck in a spiral of Evil. Sans and Frisk are happily living on the Surface. The LOVE is gone, and replaced with love. All Gaster needs to do is interfere with a moment.

Cries of the Fallen (CANCELLED) by VeronicaS189

Rating M because of mild violence :) In the surface once again, Sans just can't be happy. He has seen this too many times, it's just not special anymore. Everyone seems to notice there's something wrong, even Papyrus, and when past ghosts start haunting the older brother, he will have to try with all his might not to let his soul break. A man forgotten by everyone but one. A broken soul. A world without RESETS. Everything could go wrong. HEAVILY BASED OFF CLANNAD. REALLY. AND HANDPLATES.

Sunrise by ArinBlackheart

*WARNING* Undertale spoilers!!!! I'm trying to keep in character as much as possible, but I'm human and they will be a little off at some point or another. It's supposed to be innocent, so things won't get too deep in terms of romance. No, there's no Papyton or Sansriel. The only pairing is the canon Alphdyne and Asriel (asgore/toriel[I have hope])

What Went Wrong? by AngelOfTheDead80

~'Disclaimer: This story has a lot of profanity and covers some very very intense or touchy subjects that may disturb some readers. You have been warned.'~ ((Unedited)) After Chara fell into the Underground, they met Asriel a monster inhabitant of the Underground. Soon after that, Chara joins a new family, but their ambition to keep everyone happy goes a little overboard and Chara is flung into a reality of destruction and hopeless wonder. Then many long years later they meet the beloved Frisk, who fell into the Underground, similar to themselves. Eventually everything Chara thought they knew correctly is turned upside down and they as a person are changed forever. ~'The game Undertale belongs to Toby Fox and some of the dialogue is ripped straight from the game itself, too.'~

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Slide 1 of 10

Undertale X Reader [In Remake] cover

Reset (Sans x Older!Frisk) cover

Undertale - Fighting To Stay [Frans] [Book 3] cover

Chainsmoker [ Gaster!Sans x Reader ] cover

Cry of Bravery cover

(Sans x Reader) When Two Souls Meet cover

Broken Timelines ✔️ cover

Cries of the Fallen (CANCELLED) cover

What Went Wrong? cover

Undertale X Reader [In Remake]

Let's get to the point shall we? So let's look at the list here... You're a... no information? Hm, interesting i guess, I'll have to base it off my observation. Whatever, you're a human, well kind of. You're a human and a monster at the same time, more like in between. Let's say... player? Better than nothing i guess. You're your own person. Sometimes you control frisk, sometimes you don't. You can also move through timelines, and also universes but that may be too risky huh? You'll find more about it soon... THIS CONTAINS VIOLENCE PLEASE BE WARNED! Lemons? Maybe. - #57 in sans 12/14/25 - #1 in floweyxreader 01/10/25 *** COVER : Credits to the person who made it GAME : Toby Fox