1 - 20 of 43 Works in Monster Magic (Undertale)
Navigation
Listing Works
-
Bad time? I've had worse. by JohnFanFiction
Fandoms: Re:ゼロから始める異世界生活 | Re:Zero Starting Life in Another World (Anime), Undertale (Video Game)
20 Nov 2025
Tags
Summary
Subaru Natsuki was raised in the underground, living a life of peace and joy with his two older skeleton brothers.
When that life is however destroyed by a demon child who he ends up killing, losing his life in the process.
What will he do?
He's in a new world of mana and politics. Will his blue magic be enough to help him survive, or will he have to call upon something else?
-
Tags
Summary
(or: these bitches do be in high school)
Just your regular high school au, nothing more.
Well, unless you count the folklore.
Series
- Part 9 of UT HSAU HELL
-
Izuku’s Monster Daddy by FamousFox13
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
07 Nov 2025
Tags
Summary
Izuku Midoriya had never been so happy to have a step-dad like Asgore! Thanks to him he can truly become a hero and help people…if he can resist being praised and fucked senseless by his father and brother
-
Sweet as Sugar by Beewritesstuff (Mimispace)
Fandoms: Undertale (Video Game), Deltarune (Video Game)
10 Sep 2025
Tags
Summary
The Barrier was broken, Monsters are free...
...and Papyrus couldn't look away from the pretty girl that always comes into the shop at five o'clock.
-
Tags
Summary
The arrival of monsters from Mt. Ebott threw society into disarray. Not only was a previously unknown species discovered, but the shattering of the barrier released centuries of magic back into the world. As society struggles to move forward from their bad history with monsters, MOPA, “The Monster Obligated Placement Act” was formed. As such, all mages must provide housing for a minimum of one year for a MOPA designated monster family.
Having jumped through enough hurdles to kill a horse, you are finally forced to house a family of your own.
Between eight skeletons of varying color schemes, your reluctant past, forgotten dreams, and a desire to make up for your sins, you are forced to use your wits in a world breaking at the seams.
-
Tags
Summary
If Sans and Papyrus had a mama...
Series
- Part 5 of (UT) Slow Works...
-
Tags
Summary
On her 18th birthday, Sonny finds out Frisk, the ambassador of monsters, is her long-lost sibling. However, when they go out to celebrate, she encounters a certain dangerous skeleton who wants more from her than a one night stand.
After meeting Frisk, Sonny will finally learn her magic abilities after years of repression, but will her unnatural power kindle into a beautiful flame, or will it burn those she loves? With the help of Asriel, Toriel, and Frisk, Sonny strives to be everything her parents hated about her, and when she finds out she's pregnant, she wants to be nothing like them.
Sonny's very existence causes the timeline to hang in the balance of destruction and mercy, but that can wait while she grabbles with her situation-ships.
Updates every Friday!
Check out my socials! I post a lot of HFM art haha -
Tags
Summary
Jealousy isn't a common feeling for Gaster, especially not with Grillby. But an old Ex-turned-friend brings up the feeling with a surprising force, and the two traverse this new obstacle together
Series
- Part 5 of Moments to Savor
-
Tags
Summary
Just head canons on Undertale lore.
Comparison between fantasy and real life.
I just really love Undertale.
Musing about possibilities.
Etc. -
It's Just A Lucid Nightmare by I8Chocolatecake
Fandoms: Undertale (Video Game), Undertale Multiverse - Fandom
15 Jan 2025
Tags
Summary
Something is wrong. Something is wrong. Something is wrong, Something is-
Nothing is wrong. Everyone is happy. We are all one big found family, in our nice castle! No one is hurting here. Everyone is happy. No one is dying. No one is sick. No one is leaving. We're happy here. I'm happy here. I'm happy.
-
Temporal Fenestra by aenor_llelo, Alderous, ConcoctionsFromHell, CryptkeeperKain, izziel_galaxy, Jaybird314, translunaryAnimus
Fandoms: Undertale (Video Game)
16 Nov 2024
Tags
Summary
Temporal
1. relating to worldly as opposed to spiritual affairs; secular.
2. relating to time.
3. of or situated in the temples of the head.Fenestra
1. a small natural hole or opening, especially in a bone.
2. an artificial opening.Temporal Fenestra
1. openings in the temporal region of the skull of some amniotes, behind the orbit (eye socket).
2. artificial time windows.By complete accident, Sans discovers he's in a time loop. Entirely on purpose, he tells some guy named Papyrus. Despite himself, Papyrus wakes up every morning to meet a stranger named Sans for the first time.
Series
- Part 1 of Echtratale
-
Abyssal Hands of Love by BadOmen (PawnderingArtist), PawnderingArtist
Fandoms: Undertale (Video Game), Undertale AUs - Fandom
09 Sep 2024
Tags
Summary
" I want a hundred of your time, you're mine. " > Tyler, The Creator.
It was all okay for just a little bit, til the moment he woke up feeling different than usual. Within his new body, he's larger, snappy and more violent than usual.
He can't recognize anyone, though he wants nothing more than to be closer to the man he stole long before his sudden transformation.
He doesn't know why, but that slight comfort was enough for him to get attached. -
Tags
Summary
It was finally over… At long last, Angel was victorious. After their hard-fought victory, Angel decides to retire, and live a normal life.
There are just two problems:
Angel has no clue what ‘normal’ is…
And real life is hardly ever normal.After a while... a darkness begins to form on the horizon, and Angel's destiny draws closer and closer.
Soon Angel... and the entire world will be tested.
Will anyone be able to withstand...?
Or has their fate already been sealed...?Series
- Part 5 of AngelTale – The Story of Angel Dreemurr
-
Tags
Summary
Splitting off from your family hike may have been a mistake in hindsight. Now you were stuck in a dangerous Underground world surrounded by Monsters who would gladly slaughter you. The integrity within stops you from stooping to their level; instead, you begin an even more dangerous quest.
Befriending each and every one... Who knows, maybe you'll even find some cute 'bonefriends' to flirt with
-
"It's a Beautiful Day Outside... by Septi_FnGl
Fandoms: Undertale (Video Game), 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
19 May 2024
Tags
Summary
......"It's a beautiful night today. The stars are twinkling, the crickets are chirping...On nights like these, villains like you, should be burning in hell"......
It was a simple, ordinary day. Just another reset. Telling joke and puns, making puzzles with Papyrus, forced grins, hourly naps, breaks from his multitude of jobs... Everything was as it should be. Then he was back at Snowdin, taking a regular stroll with Papyrus and his dad.
"Sans! Look out!"
Sans turned around as a wormhole-thing opened up. The vortex winds had already lifted him off the ground, slowly pulling him toward the hole.
"Sans!"
"Papyrus, help me!"
...."Hello? Hey man, are you okay?"....
Series
- Part 1 of "It's Beautiful...
-
Searching for Who Asked. (Biography of who gives a fuck?) by 60xSleeping_Aroundx09
Fandoms: Undertale (Video Game)
05 May 2024
Tags
Summary
Waking up so much smaller than you fell asleep is a good reason to worry, but here are a couple bigger reasons to freak out...
You're a Gaster Bitty, and not your run of the mill Goopy Gaster, you're a fuckin Bitty looking just like before he fell in the Void, with monster reserves to match. Turns out there was never a model of Original Gaster in the bitty releases. Meaning you don't have to rely on no "Owner" to make sure you don't dust...
And it does no good for your soul when you realize you've been accidentally adopting every hurt skeleton you see when all you thought you were doing was sharing your Magic reserves with a hug so the other bitties you know that don't get affection won't dust...
What do you mean that the Grillbitties you saved were trying to become your mate? No way, they're just being nicer than usual! And I didn't happen to magically adopt all those hurt skeletons that are definitely not my sons- "Dad?" "Yes son?" "You are thinking too loud, stop it." "... Yes, son."
-
Tags
Summary
Nova just wanted to use the machine to find her friends... she never asked to be thrown into a whole new universe. As a cat. She didn't want to be 'adopted' either. By a 7 foot tall skeleton no less.
[I'll add more later, sorry for the bad summary. Basically my OC fucks with something that shouldn't be fucked and is adopted as a cat by Edgey boi. This is purely self indulgent.]
-
Tags
Summary
(ON HAITUS UNTIL END OF OCTOBER, READ NEWEST CHAPTER FOR INFORMATION)
"Welcome to the sleepy little town of Snowdin."
The world hasn't been kind to (N), After loosing her family, she has moved out west in an attempt to start a new life for herself. After securing a homestead with some of the family funds she inherited she decides to start making a bit of a name for herself in some unconventional ways.
Unfortunately, most of the people here are friendly, not everyone is happy to see a new human to move into the town. Particularly a crew of well known bandits.
-
Tags
Summary
There is a legend of a mountain that houses a gate that was said to have been used to send Monsters away from the human world, Children are warned to not go to the mountain and yet many have and never returned, never knowing what lay within the mountain. Years later, a pair of boy's venture to the mountain and discover the gate, now they venture through different realms seeking answers and a way to get back home.... but perhaps they will do so much more than they intended to do.
-
Megaverse Shorts by Ozziebones
Fandoms: Tales of Arcadia (Cartoons), Dragon Ball, My Little Pony, LEGO Monkie Kid, 僕のヒーローアカデミア | Boku no Hero Academia | My Hero Academia (Anime & Manga)
10 Jul 2023
Tags
Summary
Aslana can go anywhere she wants in the multiverse, so she does just that.
Now she tries to mend the damage left in her wake.This is a collection of shorts, drabbles, and scenarios of my oc Aslana and several other fandoms interacting with each other and exploring the relationships around them in my own little crossover universe.
Series
- Part 1 of Mythic Misunderstandings