Crossovers  Communities  Forums  GamesUndertale
Filters
9.6K | Page 1 2 3 4 11 .. Last Next »

The Brothers by Fantastical Chaos reviews
A long time ago, a human fell Underground and was adopted by the king and queen. All of monsterkind was filled with hope for the future between humans and monsters. Unfortunately, this tale was always meant to be a tragedy.
Rated: T - English - Family/Drama - Chapters: 5 - Words: 15,135 - Reviews: 4 - Favs: 6 - Follows: 6 - Updated: 2h - Published: 11/30/2020 - Asriel, Chara, Toriel, Asgore D.
Two Worlds: Two Souls by Halloween Witch reviews
I flinched when I felt the rocks move from under us, no longer able to hold our weight. I latched onto my sister just as the earth shattered beneath us and gave way to a free fall. Frisk screamed and I struggled to hold her to me. To use my body as a cushion when we made it to the bottom. One way or another, I wouldn't let her die.
Rated: T - English - Adventure/Romance - Chapters: 68 - Words: 319,826 - Reviews: 201 - Favs: 112 - Follows: 123 - Updated: 3h - Published: 11/14/2020 - [Sans, OC] Frisk, Papyrus
Custard Creams and Cups of Butter by I am a Protista
Hmm. 1 gram of bitter Frisk. 2 ounces of innocent Chara. 1 pinch of the world being unfair. and a light sprinking of Charisk.
Rated: T - English - Hurt/Comfort - Chapters: 1 - Words: 1,346 - Published: 4h - Frisk, Chara
Growing Pains: To the Stars and Back Again by twix012 reviews
This is a post-pacifist slice of life story of Asriel, still on his way to growing up and facing all the nagging aches and pains, despite it all, he's Determined to continue happily live his life with Frisk by his side, no matter however difficult it is, no matter how bad the growing pains get. (Updates every Monday!)
Rated: T - English - Romance/Hurt/Comfort - Chapters: 10 - Words: 108,481 - Reviews: 4 - Favs: 3 - Follows: 4 - Updated: 2/25 - Published: 1/18 - [Frisk, Flowey] Toriel, Asgore D.
Mnemophobia by ShadowShowers
Chara locks away memories of the surface to start a new life underground. Brief mentions of PTSD. Apologie for bad formatting, i don't like . Butttt, this is also on ArchiveOfOurOwn with the same name, go there if you'd like.
Rated: T - English - Angst/Friendship - Chapters: 1 - Words: 2,991 - Favs: 1 - Follows: 1 - Published: 2/24 - Asriel, Chara, Toriel, Green Soul
Endurance - Gaster x Reader by Toasty-Writer reviews
So, it just so happens that the core is going into meltdown and someone had the awesome idea of asking its creator to help. Small problem with that though... he apparently kind of doesn't exist anymore! How to resolve this? Simple, send someone into the past, namely you, to go and ask them... nothing could go wrong right?
Rated: M - English - Romance/Humor - Chapters: 4 - Words: 11,677 - Reviews: 1 - Favs: 4 - Follows: 7 - Updated: 2/23 - Published: 1/13/2021 - Papyrus, Sans, Gaster
Magnificent Plan by PokeDopes reviews
Frisk promised to free monsterkind from the Underground but died at Asgore's hands. Several years later, the Underground leads another human into its dark depths… Only this time, things are much different, and a misunderstood murdering of monsterkind leads to a total reset that brings two timelines together in a way that was never meant to be. AU/AT story. (Weekly Uploads)
Rated: T - English - Adventure/Fantasy - Chapters: 26 - Words: 137,915 - Reviews: 17 - Favs: 19 - Follows: 22 - Updated: 2/23 - Published: 4/23/2021 - OC, Sans, Chara, Flowey
Ghost friend by UnDeterminedSoul
Sharing a body and a mind with someone else isn't always easy, especially when its supposed to be kept a secret. Frisk and Chara are stuck together, probably for life, and now the two of them have to learn to live with one another. A collection of short stories with Frisk and Ghost!Chara. (Post pacifist ending, both use they/them) This fic takes ideas if you have any !
Rated: K+ - English - Humor/Family - Chapters: 1 - Words: 3,143 - Favs: 2 - Follows: 2 - Published: 2/23 - Frisk, Chara
Game Controlled by WingedCat5 reviews
Undertale, one of the coolest games around. Simple story, excellent characters, and endless fanfiction potential. But what if it wasn't just a game? What if it could be free of its true and final enemy? The Player.
Rated: T - English - Friendship/Fantasy - Chapters: 29 - Words: 71,458 - Reviews: 5 - Favs: 26 - Follows: 40 - Updated: 2/23 - Published: 1/27/2021 - OC, Papyrus, Sans, Chara
Masked Monsters by Fantastical Chaos
There are monsters in the forest. Now trapped within the endless woods surrounded by mask-wearing individuals, it is up to Frisk to discover the truth of the forest and to find the lost past of her mask companion all while hiding what she is from those who would seek to wear the skin of her face as their own.
Rated: T - English - Fantasy/Friendship - Chapters: 18 - Words: 31,392 - Favs: 6 - Follows: 3 - Updated: 2/23 - Published: 10/5/2021 - Frisk, Sans, Chara, Flowey
My Redemption by LeahLovesPotterUndertale reviews
After an abandoned genocide route and an abnormally placed TRUE RESET button, I have now respawned on the field of buttercups with no way to do another genocide route. No weapons, and the other characters that can remember timelines know nothing of it. Can I redeem myself in the underground? Let's find out. Sans X OC Rated T for that. PS: I suck at summaries.
Rated: T - English - Adventure/Hurt/Comfort - Chapters: 11 - Words: 8,789 - Reviews: 1 - Favs: 4 - Follows: 7 - Updated: 2/22 - Published: 12/2/2021 - Papyrus, Sans, Undyne, Flowey
FrenzyTale - an Undertale AU by MinisculeMisfit reviews
Too many RESETs and Genocide runs, and now everyone remembers the RESETs. The blame is placed upon Frisk. Chara comes back to life. Sans and Papyrus are missing. Frisk starts to hallucinate. What will happen? With our main character, read on to find out. I don't recommend this if you are allergic to people slowly descending into madness. Updates on Saturdays/Sundays and when I can.
Rated: T - English - Hurt/Comfort/Angst - Chapters: 2 - Words: 1,185 - Reviews: 1 - Favs: 1 - Follows: 1 - Updated: 2/20 - Published: 2/19
A Second First Date by Dragonsrule18 reviews
Pre-Boot Storyshift AU. A few weeks after the barrier breaks, Asriel and Frisk decide to try dating again. Just two cinnamon rolls having a lot of fun together, and fuzzy kisses. For my awesome friend J-Farraday.
Rated: K+ - English - Romance - Chapters: 1 - Words: 1,741 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 2/20 - [Frisk, Asriel] - Complete
Undertale: Wholehearted Half-Souls by HattyTheWriter
The ambassador of Ebott reunites with his best friend to give him his real body back. But, just as the ambassador's best friend gets his true body back and all is well in every household of Ebott, a new malevolent force arises and strikes. How will the ambassador and his best friend and brother work through this challenge and survive? Only time and DETERMINATION will tell.
Rated: T - English - Drama/Hurt/Comfort - Chapters: 1 - Words: 5,155 - Favs: 1 - Follows: 1 - Published: 2/20 - Frisk, Asriel
StoryTale by HeroGamer55 reviews
In the post-True-Pacifist world not everything is as it seems. Can the soulless really live on with a soul. Are monster and human hybrids bad or good and most importantly, can a fox handle an immortal flower.
Rated: T - English - Chapters: 10 - Words: 6,040 - Reviews: 1 - Favs: 1 - Follows: 2 - Updated: 2/19 - Published: 12/6/2021
The third one by UnDeterminedSoul reviews
Two years after monsters were freed and reached the surface, Lucius finds himself a strange power. The ability to turn back time using his determination. But a power this great takes a heavy hit on one's mental state and Lucius wasn't the first person to hold that power but the third. Its only a matter of time before those that came before realise what's happening. Now complete.
Rated: T - English - Adventure/Angst - Chapters: 22 - Words: 120,185 - Reviews: 9 - Favs: 15 - Follows: 21 - Updated: 2/19 - Published: 10/15/2021 - Frisk, OC, Chara - Complete
Of Friendship And Flirting by Dragonsrule18 reviews
Frisk is lost in the crystals caverns of Waterfall and bumps into a certain centaur. Flirting, goofiness, and friendship ensue as the two habitual flirters find a kindred spirit in each other. Both Frisk and Aaron are adults here. One of my oldest fics from AO3, posted here for my awesome friend, J-Farraday.
Rated: T - English - Friendship/Romance - Chapters: 2 - Words: 2,484 - Reviews: 5 - Favs: 4 - Follows: 3 - Updated: 2/19 - Published: 1/11 - [Frisk, Aaron] - Complete
Sanctuary of Stardust by Sheii Bae reviews
Born into a life of cruel subjugation and confinement, a young child discovers that a different kind of prison might just become her safe haven. But nothing is ever that simple. With a deadline looming and troubles starting to pile up, a new friend with a lazy grin could be just what she needs right now. Multiple AU's. Slow burn. Female Frisk. Contains OC's. Eventual SansxFrisk
Rated: T - English - Hurt/Comfort/Family - Chapters: 74 - Words: 186,397 - Reviews: 345 - Favs: 62 - Follows: 65 - Updated: 2/18 - Published: 2/20/2021 - Frisk, OC, Papyrus, Sans
Training by yeetus-the-feetus
Sans and Toby train. Things happen. (Rated T for spicyness, violence, and second-hand embarrassment. age rating: 14 ) (there is shipping. if you don't like it, that's not my problem)
Rated: T - English - Suspense/Romance - Chapters: 1 - Words: 1,064 - Published: 2/18 - [Sans, OC] Undyne - Complete
Cats And Connections by Dragonsrule18 reviews
Underfell AU. Papyrus was supposed to kill the human, but instead he found himself not only sparing her, but asking her out on a date. He feels stupid for doing so at first, but as cats are petted, pictures are shared, and lasagna is eaten, he finds himself falling for her. But can a relationship truly happen in a kill or be killed world?
Rated: T - English - Romance/Angst - Chapters: 1 - Words: 3,203 - Reviews: 4 - Favs: 5 - Follows: 4 - Published: 2/18 - [Papyrus, Frisk] - Complete
Daniel- King of Monsterkind (StoryFell) by UnderDoge
Daniel. That was his name, the one thing that he remembered from a past life, one before the Underground. He doesn't remember what his last name was- Hell, he doesn't remember his parent's faces- Yet, that doesn't matter anymore. Why, you ask? Because he's King, and he'll be damned if he allows this chance to slip from his grasp. [A story of a man of monsters. A story of change.]
Rated: T - English - Adventure - Chapters: 2 - Words: 2,014 - Published: 2/17 - OC
HDAD- Violet's Story by Dragonsrule18 reviews
Long before there was Frisk, a little girl named Violet fell into the Underground, having gotten lost on a field trip with her ballet group. Like Frisk, Toriel found her, and became like a second mother to her as she recovered from her injuries in the fall. However, Violet wants to go home. Can she convince Toriel to let her go? Set in the HDAD universe, but can be read alone.
Rated: T - English - Family/Hurt/Comfort - Chapters: 1 - Words: 2,210 - Reviews: 1 - Favs: 2 - Follows: 2 - Published: 2/17 - Toriel, Blue Soul - Complete
HDAD- A Boyfriend's Encouragement by Dragonsrule18 reviews
Frisk is stressed out about an upcoming exam and having a rough morning. But Papyrus, despite not even being home, still found a way to make her feel better. Set in the Hopes, Dreams, And DETERMINATION universe but can be read alone.
Rated: K+ - English - Romance - Chapters: 1 - Words: 491 - Reviews: 4 - Favs: 3 - Follows: 2 - Published: 2/16 - [Frisk, Papyrus] - Complete
All Because Of You! by PsiOblivion
What would happen if the six human souls that were used to break the barrier ended up reviving themselves and returning to the surface with no memories of what transpired underground. They went on blissfully for many years... until the truth of what happened finally comes out. Now the humans whom were killed are looking for answers.
Rated: K+ - English - Drama/Hurt/Comfort - Chapters: 4 - Words: 15,410 - Favs: 3 - Follows: 3 - Updated: 2/15 - Published: 1/31 - Frisk, OC, Toriel, Asgore D.
Two Princes (Asriel Dreemurr x Male reader) by AssortmentOfLetters reviews
A young human falls into the fabled Underground, the first of his kind to ever go there. He meets a monster his age and they quickly become close. In this story the reader is taking on the role of Chara, but only in the sense that they're the first human to go to the Underground and befriend Asriel. Obviously, there will be major deviations between this and the canon Chara.
Rated: M - English - Romance/Friendship - Chapters: 2 - Words: 3,618 - Reviews: 1 - Updated: 2/15 - Published: 2/13 - Asriel, Toriel, Asgore D.
9.6K | Page 1 2 3 4 11 .. Last Next »