Deltarune Crossovers
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UD: A Restless Dreemurr by The Doc K
How long had it been since she last slept? How long had it been since she went down this path of atonement? How many more of her own self must she bury, before the genocides cease? All she needs to do is look at the stick on her hip, and the LOVE-less Dreemurr knows she can't stop; not now, not ever.
Crossover - Undertale & Deltarune - Rated: T - English - Suspense/Supernatural - Chapters: 1 - Words: 1,128 - Favs: 1 - Follows: 1 - Published: 11/9 - Chara, Kris Dreemurr, Susie
Not a Nobody by Taliax reviews
The town called Hometown isn't Papyrus's home. But until he can find his way back to his universe, he'll cheer up the melancholy ghost who sounds like Mettaton. (Papyton AU where Undertale's Papyrus ends up stranded in the Deltarune universe.)
Crossover - Undertale & Deltarune - Rated: K+ - English - Romance/Hurt/Comfort - Chapters: 5 - Words: 18,908 - Reviews: 2 - Favs: 3 - Follows: 4 - Updated: 11/1 - Published: 4/23 - [Papyrus, Mettaton] - Complete
H E A V E N (DDLC x Deltarune) (Halloween Short Story) by Cobalt Gemini
After her encounter with the enigmatic man, Monika finds herself in a new dark world, now unable to feel anything. And it isn't long before she runs into a strange character... (Sequel to "Meeting in the Void") (Spamton should be in the character list, but for whatever reason, Chapter 2 characters have yet to be added to the Deltarune character list on. Also includes Gaster)
Crossover - Doki Doki Literature Club & Deltarune - Rated: T - English - Horror/Suspense - Chapters: 1 - Words: 3,593 - Published: 10/30 - Monika, Sayori - Complete
Doctor Who: The Lost Warriors by SleepyTechnoKid
The TARDIS derived off course from a strange signal into a Kingdom filled with impossible things as Sam and his new found friends, Kris and Ralsei hunts down the source with the Doctor does the same along with Susie with the TARDIS this big, things just doesn't go according to plan. And the King is loosing patience.
Crossover - Doctor Who & Deltarune - Rated: T - English - Adventure/Humor - Chapters: 1 - Words: 1,875 - Updated: 10/27 - Published: 6/24 - OC, 12th Doctor, Kris Dreemurr, Ralsei
Dégringolade of The Ill-Starred Salesman by Sycho Seth Burns reviews
If dropped in the ocean, even a pebble can create waves so large that they can crush a city when they reach the shoreline. Similarly in life, even the smallest and unassuming characters can wreck havoc if the timing is just right. And for Spamton G. Spamton, when presented the opportunity... Well, there's NOBODY more [[Desperate]] than him to take the chance and run with it.
Crossover - Touhou Project & Deltarune - Rated: M - English - Horror/Suspense - Chapters: 5 - Words: 17,311 - Reviews: 8 - Favs: 39 - Follows: 46 - Updated: 9/12 - Published: 1/31 - Marisa K., Reimu H., Yukari Y., Flandre S.
Sonic in Deltarune by Drax69
When Sonic becomes the unwilling test subject of Dr Eggman's newest weapon, he ends up in a world of adventure, magic, comedy, and drama. Said world hides deeper secrets that the blue blur stumbles onto. This is a sort of retelling of Deltarune Chapter 2, but with everyone's favorite blue rat. First story I'm posting here, so I appreciate any criticism and reviews.
Crossover - Sonic the Hedgehog & Deltarune - Rated: T - English - Adventure/Fantasy - Chapters: 12 - Words: 34,025 - Favs: 6 - Follows: 10 - Updated: 8/29 - Published: 12/23/2021 - Sonic, Kris Dreemurr, Ralsei, Susie
Three idiots in the Dark world by ZnO - Local ReZero Enjoyer
in a peaceful morning Subaru, Otto and Garfiel notices a strange closet in the mansion, the room was pitch black, no color available, as they enter the trio fall into something bigger, now the supposed "heros of the legend" have to maintain the balance between the light world and dark world.
Crossover - Re:Zero & Deltarune - Rated: T - English - Adventure/Fantasy - Chapters: 2 - Words: 2,552 - Favs: 11 - Follows: 10 - Updated: 8/16 - Published: 8/13 - Subaru N., Otto S., Garfiel T., Ralsei
Ounch on Adventure Through Multiverse by OunchMeToe
Ounch is a young fella who is just a normal guy, but he finds himself in a variety of scenarios from different worlds! With his bedroom!
Crossover - Metal Gear & Deltarune - Rated: T - English - Adventure/Mystery - Chapters: 3 - Words: 4,128 - Follows: 1 - Published: 8/7 - S. Snake, Raiden, Ralsei, Susie
Ralsei's Salon by Dragonsrule18 reviews
Frisk desperately needs a haircut. Ralsei offers to help. A little fluffy friendship oneshot set after the events of the second book in the Hopes, Dreams, And DELTARUNE series.
Crossover - Undertale & Deltarune - Rated: K+ - English - Friendship - Chapters: 1 - Words: 1,244 - Reviews: 3 - Favs: 4 - Follows: 2 - Published: 8/4 - Frisk, Ralsei - Complete
deltapearls (rewritten) by anjeez929
Mermaid Melody with Deltarune characters! The Seven Mermaid Princesses are replaced with the Seven Lightner Children. Darkners replace Panthalassa. Encounters are Deltarune battles but TP is gained by singing.
Crossover - Mermaid Melody Pichi Pichi Pitch & Deltarune - Rated: K - English - Chapters: 1 - Words: 2,056 - Published: 7/10 - Kris Dreemurr, Ralsei, Susie
Crimson Hunt by TheOriginalTale reviews
When a hiking accident sends Frisk to the depths of Mount Ebott, he's forced to adapt to his new surroundings. Meanwhile a restless prince seeks for adventure...and a new visitor just might provide the means to fulfill his cravings.
Crossover - Undertale & Deltarune - Rated: T - English - Adventure/Fantasy - Chapters: 17 - Words: 33,977 - Reviews: 2 - Favs: 8 - Follows: 16 - Updated: 7/5 - Published: 9/28/2021
Hopes, Dreams, And DELTARUNE, Book 2: Cyber World by Dragonsrule18 reviews
Frisk and Susie are left reeling from their adventures in the Dark World, but there's no time to take a deep breath. As the Knight blows another fountain open, Frisk and Susie, along with little sister Tina, Berdly and Noelle, must seal it and stop an "evil" queen from taking over. And who is the man beckoning from Frisk's dreams, the one who speaks in hands?(MAJOR UPDATE TO Ch 13)
Crossover - Undertale & Deltarune - Rated: T - English - Adventure/Friendship - Chapters: 13 - Words: 91,606 - Reviews: 47 - Favs: 16 - Follows: 17 - Updated: 6/30 - Published: 1/8 - Frisk, Noelle Holiday, Ralsei, Susie - Complete
HDAD-DR- Susie The Teddy Bear by Dragonsrule18 reviews
It's midnight in Castletown, and Frisk and Ralsei are asleep on the couch, using Susie as a pillow/teddy bear. Susie finds herself not minding. Just a little drabble set in my Hopes, Dreams, And DELTARUNE universe, sometime after the second book, though it can be read alone.
Crossover - Undertale & Deltarune - Rated: T - English - Friendship - Chapters: 1 - Words: 460 - Reviews: 4 - Favs: 4 - Follows: 3 - Published: 6/25 - Frisk, Ralsei, Susie - Complete
Puella Magi Sayaka Magica: Deltarune by Narty Naz reviews
After the revelation that magical girls had their souls severed out of their bodies and put inside their soul gem, Sayaka nearly went on a slow, downward spiral toward self-destruction. Fortunately, that descent was interrupted when she was suddenly transferred to a school in a town called Hometown. How will this turn of events affect her as a magical girl?
Crossover - Puella Magi Madoka Magica/魔法少女まどか★マギカ & Deltarune - Rated: T - English - Adventure - Chapters: 1 - Words: 5,037 - Reviews: 2 - Favs: 9 - Follows: 11 - Published: 6/7 - Sayaka M., Kris Dreemurr, Ralsei, Susie
Everyone has their Awkward Teenage Phase by unfortunatelythatsap
Upon the EPF's discovery that he's not who he says he is, Gary goes back in time to show them the truth- only to run into a paradox along the way. He doesn't know if this will have any effect on the timeline, but the more he remembers about Berdly the more he wishes he could just keep forgetting. (HOW does Berdly not have a tag? Credit to Creepyboom the Gamer for the idea/"theory")
Crossover - Club penguin & Deltarune - Rated: K+ - English - Drama - Chapters: 1 - Words: 1,869 - Published: 6/4 - Gary the Gadget Guy
Spamgolor by BrandonK7200
Spamgolor is a fanfic that takes Magolor, and puts him in place of Spamton in Deltarune's story. I did this mainly because I really like these two characters, and because they both have a lot of similarities. SPOILERS FOR CHAPTER 2 OF DELTARUNE
Crossover - Kirby & Deltarune - Rated: K+ - English - Adventure - Chapters: 2 - Words: 1,812 - Favs: 1 - Published: 4/21 - Magolor, Kris Dreemurr - Complete
Legend of Delta RWBY by AutoHunterJ49
LIGHT and DARK have coexisted for millennia. But when the balance began to shift. Lightners from TWO worlds join forces to prevent a terrible calamity. (currently in development)
Crossover - RWBY & Deltarune - Rated: T - English - Friendship/Adventure - Chapters: 1 - Words: 217 - Favs: 2 - Follows: 4 - Published: 4/16
Re: Re: Re: A Rude Busting Start, Zeros Excluded! (Feat: Fun Gang) Re: by GuioReo reviews
Subaru waking up in a completely new environment... again isn't his first plan. Double isekai? (It's more a 'hub world' actually.) After failing to save that elf girl a second time Subaru hears an alarm on his phone... while in another world...? Curious, Subaru's answering leads to new companions and abilities, saving that cute girl is gonna be a lot more breezy.
Crossover - Re:Zero & Deltarune - Rated: K - English - Adventure/Friendship - Chapters: 1 - Words: 2,241 - Reviews: 3 - Favs: 13 - Follows: 15 - Published: 4/15 - Subaru N., Kris Dreemurr, Ralsei, Susie
The Fallen Jester of Remnant by Alanstrocity
What if Ozma and Salem had a son? He always loved to make those around him smile. But what happens when the kingdom falls? (Expect slow updates)
Crossover - RWBY & Deltarune - Rated: T - English - Adventure - Chapters: 10 - Words: 27,904 - Favs: 7 - Follows: 7 - Published: 3/24 - Team RWBY, Jevil
Destiny (Un)altered by FawnFiction reviews
Kris tires of being a puppet. Kris tires of having every urge and impulse dictated by an entity they cannot see or hear. During one of their few reprieves from the controlling soul, they wake up to the sight of an old man with an abnormally long nose and a devilish grin. The old man speaks in a gentle, wise voice. "Welcome to the Velvet Room."
Crossover - Persona Series & Deltarune - Rated: T - English - Adventure/Mystery - Chapters: 1 - Words: 633 - Reviews: 1 - Favs: 6 - Follows: 6 - Published: 3/13 - Igor, Kris Dreemurr, Ralsei, Susie
Party at the end of the Universe! by Hail-z Summerx reviews
I get to go to high school with BTS, Moxxie, Lancer, Dipper, Freddy Fazbear, Shrek, Chara the Party Gurl, Tom Holland, Uzi Murder Drone and we do some totally crazy epic stuff! there's romance, drama, darkness edginess and blood it's so amazing You've gotta see it lel! Oh & there's Kuromi & a refrence to Gerard Way TW: Some bad stuff happends! rAWR XD
Crossover - Gravity Falls & Deltarune - Rated: T - English - Humor/Parody - Chapters: 1 - Words: 1,139 - Reviews: 2 - Favs: 1 - Follows: 1 - Published: 3/11 - Dipper P., Mabel P., Bill, Ralsei
Intervention by ShutDog1212 reviews
IT SEEMS THAT THE VESSEL I'VE ASSIGNED YOU HAS BEEN UNWILLING, OR UNABLE TO COMPLETE THE TASKS LAID OUT BEFORE THEM. THEREFORE I HAVE ASSIGNED A SUITABLE REPLACEMENT FOR YOU. YOU HAVE BEEN ASSIGNED TO A BEING CALLED "THE BATTER". I LOOK FORWARD TO YOUR CONTINUED PROGRESS.
Crossover - OFF & Deltarune - Rated: T - English - Tragedy/Mystery - Chapters: 1 - Words: 1,405 - Reviews: 3 - Favs: 4 - Follows: 3 - Published: 3/9 - Bat Batteur, Kris Dreemurr - Complete
Of Dark Dreams and Whispered Legends by GeekCat reviews
Fluttershy unexpectedly falls asleep in the library while working on her class project. Her dream is so vivid that it feels real, and she learns more about both her foalhood friend Rainbow Dash and the class troublemaker (and her crush) Discord. Written for Fluttercord Week 2022.
Crossover - My Little Pony & Deltarune - Rated: K+ - English - Romance/Drama - Chapters: 1 - Words: 21,528 - Reviews: 1 - Favs: 7 - Follows: 4 - Published: 1/27 - [Discord, Fluttershy] Rainbow Dash, Princess Luna/Nightmare Moon - Complete
The Chaos Trio by Pun fan reviews
What happens when a Jester, a comedian, and a salesman all pick a kid to pass their legacy onto? CHAOS! CHAOS! Is what!
Crossover - My Hero Academia/僕のヒーローアカデミア & Deltarune - Rated: T - English - Chapters: 2 - Words: 2,174 - Reviews: 7 - Favs: 18 - Follows: 23 - Updated: 1/10 - Published: 12/21/2021 - Izuku M., Jevil, Sans
Hopes, Dreams, And DELTARUNE, Book 1: The Dark World by Dragonsrule18 reviews
In one world, a neglected girl searching for a flower for a professor to make money to take care of her sister fell into a world full of monsters and freed them. But in the timeline just to the left, the war never began. But Frisk's fate is still tied to the monsters, and a transfer to a new school leads her and fellow outcast Susie to a new world. A Dark World.
Crossover - Undertale & Deltarune - Rated: T - English - Friendship/Adventure - Chapters: 7 - Words: 48,305 - Reviews: 34 - Favs: 28 - Follows: 21 - Updated: 1/1 - Published: 11/20/2021 - Frisk, Lancer, Ralsei, Susie - Complete
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