Undertale
16 stories
When Two Fates Intertwine (Sans x Reader) by ZanaBSparrows
ZanaBSparrows
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[THIS IS A SEQUEL TO MY OTHER FANFIC "WHEN TWO SOULS MEET!" If you haven't read it, I would highly suggest it--the story won't make much sense otherwise.] Sans has finally found someone he can trust--Frisk's sister, the eighth fallen human. After months of step-siding and awkward interactions, the two are finally a couple. Things are finally falling into place--there are no more resets, and Chara and Flowey have been a lot more quiet in the last few months. But things can't stay this way... can they?
(Sans x Reader) When Two Souls Meet by ZanaBSparrows
ZanaBSparrows
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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.)
Death's Queen by StarRoseColors
StarRoseColors
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"Soon, kid. Soon." Sans whispered, pressing kisses to Frisk's neck. The goddess groaned in her sleep. "Soon, the only person that will be allowed to touch you will be me." ~'~'~ Frisk, goddess of mercy and spring, is kidnapped by her mother Toriel's dark other half. Sans, lonely and in love with her, keeps her in his dark underworld as the world slowly dies. Based off of Hades and Persephone. Reapertale belongs to Ren and Undertale belongs to Toby Foxx
-A Chance- (G!Sans X Reader) by UniiReads
UniiReads
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(DISCONTINUED) "...Id rather die.." The knife was cutting in already. "Dont you..." The shaking skeleton reached out. "...another chance.." He smiled gently. "..free them.." One chance only,or.. "...go back.." You were gone. You came back. You got one chance. And while trying to fulfill your task,you fall in love.
Forced Love (GasterSans x Frisk) by UnknownWaterTonari
UnknownWaterTonari
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Frisk and her parents own a large mansion in a city. When she turns 18 her parents decide that she's now old enough to get married. Her parents are protective but also quite strict, so they decide Frisk should get a organised marriage. Will it work out for Frisk? {All characters and art belongs to their rightful owners}
My Savior (Gaster Sans/G!Sans x Reader) by Sillychick120
Sillychick120
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⚠️(UNDER EDITING)⚠️ *My version of Echotale is not cannon to the comic AT ALL! This is my version so G! x Reader can actually work. More details in first chapter!* (Y/n) is a runaway from her abusive parents, and while her escape plan fails she happens to run into someone who helps her out. The man..well monster seems cold and uncaring at first towards the human girl, being as he seems to have a hate for them since they trapped monsters in the first place, slowly starts becoming more kind and maybe even flirtatious towards (Y/n).
Sharpshooter ' Mafiatale Sans x Reader ' by Sillychick120
Sillychick120
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You were left to survive on your own when you were Ten. Now, your Eighteen and the monster were let free. You were known as, "The Flame," Why were you called that? To find out, read this story. NOTE: Ander, Christian and Georgie are based off real people. Please understand they aren't exactly the same as they are in the story.
Lost Without You (Gaster!Sans X Reader) by RachieAndrews
RachieAndrews
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This story will contains things such as ABUSE, CAPTIVATION, VIOLENCE, ect. This is the only warning I will give, so if it's not your cup of tea- sorry about that! . . . Death. War. Violence. A world torn apart by two separate races. In a place like that, can peace even exist? Will you fight for your freedom as a human? Or lose yourself in the arms of a monster? . . .
An Old Friend ' Underfell Sans x Reader ' by Sillychick120
Sillychick120
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You and Sans had been friends since you were little, when the monsters had to leave, you were really upset that your only friend, Red as you called him, had to leave. Will he remember you after 7 years of being in the underground? Or will he just forget about you? To find out, read 'An Old Friend' Underfell Sans x Reader.
Am I happy? (Sequal to 'The girl') -=+=Gaster!Sans X Reader=+=- [DISCONTINUED] by Anime_Lunatic_Dorito
Anime_Lunatic_Dorito
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Are you truly happy? You are newly engaged to G, but he starts changing a week later. Your worried about him. He sneaks out and night and just doesn't treat you the same way anymore. But one night, but you soon regret it. They say forgive and forget. But how can you forget.. what you saw saw and how can you forgive?