#underswap!bratty

[zirkkun-uthcs]

Underswap Asriel Headcanons

I’ve always hated how overlooked Asriel is in Underswap. I get that the MK <> Asriel swap doesn’t make much sense, but implications of this swap are fun to think about

I image Swap!Azzy to be pretty similar to his classic counterpart with two major differences. One, he’s a big fan of Alphys, and two, he doesn’t have legs.

The legs thing is inspired by one comic of Monster Kid watching Mettaton’s show and getting super excited when MTT says “Who needs arms with legs like these?” Since Napstaton loves his arms, I though it’d be a funny parallel, on top of me just trying to be original.

Swap!Asriel has prosthetic legs that Undyne made at Toriel’s request. Azzy’s pretty self-conscious about them, so he wears super long sweatpants that he trips over a lot. Swap!Asriel also plays a bigger part in the story than classic MK. He still sneaks out against his parents’ wishes, but that carries a lot more weight when you remember that he’s the prince. 

Asriel sticks a lot closer to you and basically becomes your only party member, possessing healing abilities similar to Ralsei’s. His anxiousness shows itself in his acts, especially when he has a flex off with Shyren, though he does seem to enjoy singing with Aaron. 

Alphys’ chase scenes involve Chara dragging Asriel along by the hand, with Alphys attacking a lot less out of fear of accidentally hitting the prince. Alphys, along with the additional guards patrolling Waterfall due to the prince’s absence, are under the assumption that Chara is holding the prince hostage, or at the very least manipulating him.

Alphys attempts to reason with Asriel, but the path gives out, causing Chara and Asriel to fall into the dump. The flashback plays out the same, and Chara wakes up to Asriel worriedly calling out to them. Asriel’s clothes are all sorts of messed up after the fall, basically forcing Azzy to come clean about his prosthetics. He asks Chara if they think he’s lame because of it. Chara will say no regardless of which option you chose.

Asriel becomes a bit more confident, even after the Bored Dummy insults him for having such boring magic attacks. He mentioned his love of the stars if you poked around the wishing room, but he’s now more vocal about it. He really likes Hapstablook’s poem about the stars, and he looks through Sans’s telescope, only to find that Papyrus drew on the lense with marker. A classic Papyrus Prank TM. 

After facing off against more guards, including 01 and 02, Chara and Asriel arive at the cliff. Alphys actually starts telling Chara the story of monsters before Asriel tries to sneak past with Chara, who seemed genuinely interested. The chase plays out similar to canon, only with Alphys trying to talk Asriel down. If you say just the right things, Asriel can convince Alphys to back off. If not, then the chase continues all the way to the bridge to Hotland. 

Alphys doesn’t buckle under the heat, instead grabbing Asriel. In a panic, Asriel pushes her away, right off the bridge. Alphys is now dangling above molten lava. She’s struggling to hold on, and Asriel can’t pull her up on his own.

If Chara does nothing, Alphys falls and dies. Asriel, overwhelmed by the guilt of killing his hero and his only true friend doing nothing about it, runs back to Waterfall. In many resulting Neutral routes, he is still missing. 

If Chara does help, Asriel will apologize profusely. Alphys asks one last time that Asriel stay away from the human, even though now, she seems a bit reluctant to. On more violent neutral runs, Asriel does just that, but otherwise, he stands his ground. 

Undyne is ticked off by the visitors, but she tries to be more approachable when she realizes that it’s the prince and the human. Asriel mentions seeing Napstaton’s blue prints along with the designs for his prosthetics. Undyne talks about Napstaton, who then bursts through the wall. 

Instead of TV programs, Napstaton’s encounters are them filming for their Music Videos. Each one is themed. A science song for the lab, a Halloween song, a love song (which is basically just the musical scene). Each encounter baring the first utilizes the Cyan soul, which is basically just DDR. Asriel can sing in each encounter, and he can even show up Napstaton, giving you the chance to freestyle. If you freestyle on all the previous encounters, then Asriel will (unwilling) play the part of the princess in the love song instead of Napstaton. 

Catty and Bratty are now 03 and 04, and their fight is pretty much the same as the unused encounter. Grillby is tough to reason with, as he doesn’t talk, but Asriel can help the fire monster WARM UP to you. In fact, Asriel can help you spare a lot of monsters in Hotland and the Core easier than if you were alone. Also, Asriel can cause Grillby’s attacks to become stronger/more erratic if he attacks the fire monster because fire + fire = more fire. 

In the dinner scene with Papyrus, Asriel confirms that the man behind the door is Asgore. Unlike classic Toriel, Swap!Asgore didn’t run away. He was purposely relocated to the ruins to… collect the human souls quicker. Papyrus drops a penny and takes his opportunity to stairwalk away and let you two talk.

Asriel talks about how tense things are between his parents. How tense the guards are as they walk him to ruins so he can stay with his father for the weekend. How tense his dad is when he tucks him in.

Asriel explains that he didn’t sneak out because he wanted to see Alphys, or the “stars,” or any of that. He snuck out because his parents were fighting over the phone. He needed to get out and clear his head.

Asriel chuckles at the irony. If he hadn’t been in such a bad situation, then he never would’ve met you. You, Chara, who saw him for who he was. Not “Asriel Dreemurr,” or “Asriel the prince.”

He was just Asriel. 

01 and 02 are out in the back alley selling stuff if you didn’t kill them. Nice Cream Guy puts on a glossy exterior, but Asriel can tell that the bunny man is dead inside. 

Undyne actually gives you the correct directions in the Core because she kinda wants you out of her hair. If you couldn’t tell, Hotland’s heat has made her a bit of a grump. 

At the end of the Core, you face off with both Napstaton and Hapstablook, the latter now having a robot body and going by Mettaton. Chara can help Mettaton overcome their stage fright, while Asriel can cause Napstaton to tear himself to bits similarly to classic MTT. Yes, that means that Napstaton’s question of “who needs legs with arms like these?” is directed at Asriel. Que happy goat boy sounds. 

Anyways, Napstaton has a bit of a Blooky moment before powering down, and Undyne steps in to sort everything out. While Undyne helps Mettaton calm down, Asriel and Chara ride the elevator to New Home. Asriel is the one who explains the situation with you taking the queen’s soul, though he’s even less tactful than classic Alphys.

If you killed Napstaton or Mettaton, not only would the fight end abruptly, but Asriel would lock himself in his room. Asriel would also do this if you started killing monsters after saving Alphys. 

If neither of those are true, then Asriel will follow you through the judgment hall, where all of your sins (or lack thereof) are spelled out by Papyrus, and finally, you reach the throne room. Toriel is both shocked and relieved to see her son, but when her gaze lands on Chara, she goes numb. She tells Asriel to go to his room, and after much arguing, he obliges, though not before giving Chara something.

A heart-shaped locket. 

[bluemoth698]

Here's my take on Underswap Bratty & Catty, both swapped with Muffet!

They're two struggling journalists out to make their own headlines. For Bratty I definitely was going for a Barbie doll kinda vibe with it, and they’re dressed up in warm clothes because i have area themes swapped, the ruins are autumn, Snowdin (heatout, placeholder name) is summer, Waterfall (Autumnfall, placeholder name) is autumn, and Hotland (coldland, temporary name) is winter.

No thoughts

Head empty

Special thanks to ChrisTheRaccTamer as always for his tweaks to the sprites, and feel free to ask any questions you may have about the AU!

[lunacycleok]

Concept art for an Underswap take that I never ended up making (I'm an amateur artist)

[sariels-world-ella]

Tried to make a height chart of each royal guard member in Sw!Fallenswap that we know the name of but I did forget some, but eh, whatever.

More information can be found in the document which is links to various other docs I wrote regarding the Sw!Fallenswap Royal Guard:

[deltaswap2442]

Underswap take redesign pt 2

Dogamy-Lesser Dog role. I sniffed right into you human. Prepare for a snoofing of sneefiness

Dogeressa-Greater Dog role. (Are you a small human or...a little puppy?)

Icepop-pants-Nice Cream Guy role. Start an ice cream business in Frostown they said! There's good business there they said! You'll make something of yourself they said! Well there go my dreams of being an interpretive dancer! Hope you're happy mom!

Smiley Meal Guy-Burgerpants role. Oh Napstabot is a great boss! Just wish the customers were as nice... It doesn't help that I'm the only one working here.... B-but- gotta stay positive!

Gerson-Snowdin Shopkeeper role. Wahaha! Welcome to Frostown traveler! Come and take a rest but don't get too comfortable! If ya stop moving for too long you'll turn from a human into a snowman! Wahaha!

QC- Gerson role. Greetings wanderer. I'm QC but back in my Royal Gaurd days they called me the Mace of Justice. But then I had to retire early to raise my family. And now they have their families and I'm old and got too much time on my hands. So I started selling some of my junk I've collected over the years

Flowey-Temmie role. Howdy! Welcome to the Flowy Shop! Hehehe! Don't I know you?Catty-RG 01 role. Oh my gawd! You're like a human. Guess I gotta kill you and stuff lol

Bratty-RG 02 role. Oh I totally got this. Reach for the sky dork cause...cowboy and junk.

Tubular Dude 01-Catty role. Like OMG! Napstabot's music like totally slaps dude! Do you think they will like sign my butt?

Tubular Dude 02-Bratty role. ...bro...no one wants to touch your butt but me...

Gaster-River Person. *He signs out "Beware the person who speaks in rhyme"*

Superdog-Annoying Dog role. Duh duh duh duh! Superdog!

Mikeal-Asriel role. I'm so happy to be back to a monster kid again... Can you hear me Frisk? It's your old friend... MIKEAL DREEMUR!!

Mikeal Dragon of Hyperdestruction-Asriel God of Hyperdeath role. When we're done playing together I'll just reset the timeline and do it all over again!

Mikeal True Dragon of Hyperdestruction-Asriel Absolute God of Hyperdeath role. Why won't you just give up! Let me win! Let me wiiiiiin!!!!

Frisk-Chara role. Welcome to my special hell. I'm what they call Frisk... The monster that appears when called for.

Dr. Arial-Gaster role. ENTRY NUMBER 17: DARK YET DARKER...SURROUNDED BY DARKNESS I TRY TO REACH THE SURFACE BUT SOMETHING WEIGHS ME DOWN...I TRY TO YELL FOR HELP BUT THERE IS NO SOUND NOBODY CAME...NOBODY...NOBODY..NOBODY CARES...NOBODY REMEMBERS .....WILL YOU TAKE MY HAND?

[boxed-soup]

2D three times! XD

[otherswap]

otherswap.neocities.org

An alternate take on the Underswap AU premise featuring different character pairings & the Holidays from DELTARUNE.

AU details below:

Characters shown here: Asgore Dreemurr → Rudolph Holiday Toriel → Dess Asriel → Noelle Flowey (Asriel) → Flowey (Chara) *NOTE: Chara is still the first human to fall down. They switch story roles with Noelle. Papyrus ↔ Undyne Sans ↔ Alphys Mettaton ↔ Mad Mew Mew Napstablook ↔ Ruins Dummy Annoying Dog ↔ Temmie

Characters not shown here: Monster Kid ↔ Snowdrake Muffet ↔ Burgerpants Grillby ↔ Nice Cream Guy Gerson Boom ↔ Snowdin Inn Keeper (QC) Bratty & Catty ↔ Royal Guard 01 & 02 *NOTE: Any character not mentioned thus far is either unchanged or has not been thought about yet.

---

The Underground: The Ruins → The Depths

The deepest part of the Underground. The Depths are composed of dark, volcanic caverns and serve as the entrance to the rest of the Underground.

Snowdin → Clearwater

A tropical paradise with a resort at its heart, run by Gerson Boom. It's considered the nicest part of the Underground and many monsters wish to live here.

Waterfall → Forestgrove

Forestgrove has a temperate climate, lush vegetation, and fields of Golden Flowers. The vast tangle of forest makes it easy to get lost in, unless you know your way around.

Hotland → Highpeaks

A vast and densely populated city built into craggy cliffsides of the Underground. The city features many apartments, restaurants, shady back alleys, and the Royal Science center.

THE CORE

Located within Highpeaks is the large cold-fusion reactor facility that supplies the Underground with electricity. It was created by the former Royal Scientist.

New Home/The Capital

The highest point of the Underground. Just beyond it is the Barrier, but seldom few live here anyways. The frosted-over castle is always decorated like it's Christmas Eve.

---

Important info: OTHERSWAP is not being developed as a fangame, mod, comic, or anything of that nature. This is just an AU setting created for funsies. It is not trying to replace or "improve" the original Underswap AU.

This AU was first conceptualized shortly after the release of DELTARUNE Chapter 2. At the time of posting, there is no official design for Dess or Mayor Holiday. Dess' design may be changed in the future if she ever appears in official UTDR content and Mayor Holiday has not been included in OTHERSWAP at all. Although she takes the role of Toriel in this AU, Dess is still the eldest daughter of Rudolph Holiday and is treated accordingly. This AU has decided to replace the Dreemurrs with the Holidays as they also exist within UNDERTALE canon (UNDERTALE 5th Anniversary Alarm Clock Winter Dialogue - Asgore, UNDERTALE Xbox port exclusive dialogue).

Artwork posted by this account (@otherswap) is created by @dvdexe. A full list of credits can be found here.

[deltatraveler]

Okay, I got more questions that may or may not be too spoiler heavy(Sorry if it’s very long list):

1. Will clover and kanako get some sibling bonding in Deltatraveler yellow? Cuz Ceroba’s like clover’s mom

2. Will the integrity human make an appearance in Deltatraveler yellow?

3. Why do Susie and Noelle still listen to our commands even tho we killed a bunch of people? They even tried to stop us and Susie even said that she was done but why does she still listen to our violent commands? Do we have like some powerful control over them because we’ re the player? 4. How will Kris and Chara react to seeing each other? 5. Is UT chara the narrator? 6. Is Ralsei just gonna be a running gag or is he going to be more significant to the plot?

7. Will Link or Zelda fight us in obliteration? 8. What’s the deal with fell sans, I don’t get it? Do I need to watch the GG!underfell animations to understand? 9. Will Gaster be afraid of us because we’re homocidal and knows that we got a taste, want to wipe out the monster race, got no patience nor resolve? 10. Will UT berdly, Suzy, catti, jockington, catty, bratty, nice cream guy, burgerpants, Monster kid, and temmie make an appearance in the future? 11. Why did you remove gaster saying mommy, sorry after we name ourselves ceroba?

12. Will underswap flowey and temmies make an appearance in section 5? 13. I don’t mean to be rude but out of all the Zelda/M&L/3D games why link to the past/bowser’s inside story/toontown?

1 - idk 2 - Nope 3 - Because they care about Kris too much 4 - No comment 5 - No, I am. 6 - He might play a little bit of a larger role in the story, but only a little bit. 7 - No. 8 - I will leave this for you to figure out :) 9 - He thinks he's in control. 10 - You're asking too many questions. 11 - Team UTY didn't like how Ceroba was being portrayed in some fan content, and that easter egg was one of them, so I removed the easter egg personally. 12 - No comment 13 - Because I like them

now stop asking me multiple questions in a single ask. i will intentionally give low quality responses if you do this.

[kalapenopeppers]

A long time ago, two races ruled peacefully over the Earth: HUMANS and MONSTERS. One day, a terrible war broke out between the two races.  After a long battle, the humans were victorious. They sealed the monsters underground with a magical spell.

Many years later… In the year 201X, a small child scales Mt. Ebott. Legends says that those who climb the mountain never return. 

Seeking refuge from the rainy weather, the child enters a cave and discovers an enormous hole. Moving closer to get a better look... the child falls in. 

Now, our story begins.   

So, we all know generally how underswap goes with the role swaps and personality swaps but I still want to put out the premise for my dedicated take on it.

The original AU follows partial personality swaps which is my favourite type so I'm adhering to that, but I'm taking that concept and twisting it to make it work for me and create something hopefully more unique.

This underswap is along the lines of a timeline that diverged so much it’s basically regarded as an alternative universe, starting with Frisk being born in the place of Chara.

In terms of characterization, while parts of their surface level demeanor and attitude match their role and counterpart with some core personality traits swapped, things like their relationships, individual preferences, insecurities, skills, and abilities generally stay intact (if only adjusted to account for the changes an AU like this inherently brings). Some extra add ons from the original au with also be kept. This lets the new parts that are swapped be expressed through the lens of their UT selves that they retained, allowing new scenarios and interactions to take place.

Not every swap is one to one with the original AU. Some additional characters, enemies, and items have been added in. The Underground itself has experienced some changes. Canon story beats are present but new storylines have also been built around them, as I also employ my personal headcanons into the mix.

This does have a full story in the works behind it and most of the details for the personalities have been ironed out. I hope to communicate it over time with those who take an interest in it.

The post will be updated as more details are revealed.

Asks about the current zone (Catacombs) and characters within it are welcomed. Questions touching on content past the current zone or spoilers will not be answered or be very light on details.

Swaps listed below the cut:

Chara ⇆ Frisk Flowey the Flower → Flowey the Temmie? Asriel ⇆ Monster Kid Asgore ⇆ Toriel Sans ⇆ Papyrus Undyne ⇆ Alphys Napstablook ⇆ Mettaton Ruins dummy ⇆ Mad dummy Annoying dog ⇆ Temmie Snowdin Dogs ⇆ Snowdin Bunnies Grillby ⇆ Muffet Nice cream guy ⇆ Burgerpants Ice Wolf ⇆ Aaron Bratty and Catty ⇆ Royal Guard 01 and 02

And more that will be revealed throughout the story. Stay tuned!

[funderswap]

Hello and Welcome to the Funderswap Official Tumblr!

For those wondering, Funderswap is an Undertale AU based off of Underswap. While there are changes to the roleswap list (mostly within the side characters), Funderswap follows most of the main character swaps set by Underswap. Not only that, the areas in the underground swap to create new areas based around what they're swapped with!

Main swaps

Frisk <-> Chara

Asriel <-> Monster Kid

Flowey <-> Ragel

Toriel <-> Asgore

Ruins Dummy <-> Mad Dummy

Napstablook <-> Mettaton

Sans <-> Papyrus

Undyne <-> Alphys

Area Swaps

Ruins/New Home <-> Waterfall

Hotland <-> Snowdin

CORE <-> True Lab

Other Swaps

Burgerpants <-> Nice Cream Guy

Dogamy and Dogaressa <-> RG01 and RG02

Doggo <-> Drunk Bun (Bunka)

Lesser Dog <-> Rabbit Girl (Sugar) and Rabbit Kid (Spice)

Greater Dog <-> Cinnamon

Glyde <-> So Sorry

Grillby <-> Muffet

Snowdin Shopkeeper (QC).and Snowdin Inkeeper (QT) <-> Catty and Bratty

Small Bird <-> Thundersnail

Gerson <-> Gaster

River Person <-> Father Alvin

Important Stuff

Characters - WIP

Areas - WIP

[capricioussun]

Love imagining all the different guys interacting in a mv surface scenario. Love thinking about all the odd combinations and relationships. Undertale Undyne and Underfell Papyrus. Swapfell Alphys and Underfell Mettaton. Underswap Asgore and Undertale Toriel.

I’ve always liked the hc that Alphys and Catty and Bratty are friends in UT and UF, but not in SF or FS, what would all the different versions think of their alternates’ relationships? Underswap Papyrus and Asgore are friends for sure, but the Tale and Fell Toriels and Sanses are in QPRs, isn’t that funny? Swapfell Grillby is incredibly intense and has a silver tongue, while Underfell Grillby is quiet, and prefers to stay out of things, what would Underfell Sans think about the version of his friend who’s almost a total inverse of what he knows? How did they become like that? There’s so many similarities but almost as many differences, it seems.

So neat to ponder

[bluemoth698]

Here's my take on Underswap Muffet, swapped with Catty and Bratty

I thought it would be fun for Muffet to be a little painter here who sells her art for way too much money. Papyrus has commissioned her a few times and likes to play fetch with her pet when he visits.

Special thanks to ChrisTheRaccTamer and Shroompng for their help with the background and tweaks to the sprites, and feel free to ask any questions you may have about the AU!

[fantasy-fields-bitty-center]

Kapro bitty: Swap Bratty

UnderSwap Bratty Kaprosuchus

Name: Kratty

Size: 6 - 12 inches tall(Mini), 2 - 3 feet tall(fullsize), 5 - 6 feet tall(Bara)

Personality: Friendly, active,

Likes: Running, playing, fetch, tag, Catty bitties,

Dislikes: Being bored, being inside to long, having to sit still for to long,

Compatibility: Kratty bitties LOVE running around and have way to much energy- dont get a Kratty if you cant keep up with their energy because they can somehow manage to stay up for days on end playing and running around- they are known for being the hardest to catch among the staff, and thats saying something because over half of the staff isnt human-

Kratty bitties can easily reach up to 60-70mph on average at full speed, unlike the usual 40-50 of other Kapro bitties, and can make super fast turns, making them even harder to catch! Though the good side of this is that they are rarely stuck in abuse situations or bitty fighting rings! Kratty and other Kapro bitties are actually known for helping get bitty fighting rings shut down!

They are super cuddly and whenever they get tired they will happily cuddle up to their owner or other bitties!

They need a LOT of area to run around and plenty of time outside! But maybe make sure theres a tall fence, since they can jump pretty high and can end up getting lost!

Feeding habits: They are mostly carnivorous and eat fish and meat!

Additional info: Kapro bitties are full of energy and love running around, the are also notorious for booking it whenever one of the staff tries to get them inside when someone wants to meet some of them(much to everyones dismay, as they are also suuuuper fast- reaching up to 40mph on the slow end)

Kapro bitties are more commonly quadrupeds instead of more upright! But not all of them are quadrupeds,

Zone: Plains, Forest, Swamp, Jungle, Savanna,

In Universe: They are seen as odd bitties to try to house but many athletes like them!

Difficulty: Advanced

Features:

Main colors: Green, yellow, gold, blue, purple, black,

Secondary colors: Green, yellow, gold, blue, purple, black,

Extra: N/A

Additional info: They usually have darker colors on top and lighter colors on bottom and stripes for patterns if they have any,

[underswap-ex]

What is Underswap EX?

A reimagining of Undertale based on Popcornpr1nce’s Underswap and Moonster’s underswap/Temmieswap. Here is a list of roles, with the whole plot, coming soon

Questions Welcome! Ask anything to me, or any character and we’ll respond :)

Main Roles

Frisk-Chara

Flowey-Ragel

Toriel-Asgore

Napstablook-Mettaton

Sans-Papyrus

Monsterkid-Asriel

Undyne-Alphys

Side Roles

Ruins Dummy-Mad Dummy

Fightable Froggit-Fightable Temmie

Whimsum-Woshua

Ruins Moldsaml-Waterfall Moldsmal

Bake Sale Spiders-Shop Temmie

Loox-Aaron

Migosp-Shyren

Vegetoid-Moldbygg

Snowdrake-Vulkin

Icecap-Tsundereplane

Doggo-RG04

Chilldrake-Pyrope

Lesser Dog-RG03

Dogamy-RG01

Dogaressa-RG02

Greater Dog-Catty (RG06)

Q.C. (Snowdin Shopkeeper)-Bratty

Grilby-Burgerpants

Flat Fish Ferry-Riverperson

Gerson-Gaster

Madjick-Watching Man

Knight Knight-Meomory Heads

Photoshop Flowey-Adobe Ragel

Endogeny-Asura (Former RG05)

Lemon Bread-Reaper Bird

Locations

Ruins-Waterfall

Snowdin Forest-Hotland

Snowdin Town-MTT Resort

Sans’s Lab-True Lab

Quiet Waters-New Home

CORE-Unused Ice Cave

[soul-of-justice--uty]

How to tell if you are a true underswap lover and you have reached peak Fandom:

Sans never ever referred to himself as the magnificent sans in any official artwork

Sans still likes puns

Papyrus doesn’t smoke weed

The Bird That Carries You Over A Disproportionately Small Gap and Onionsan swap roles

RG1 and 2 swap roles with Catty and Bratty

Arron swaps roles with Shyren

Flowey swaps roles with Temmie. . . (I can’t believe people are forgetting this).

I know nothing about underswap

[deltaswap2442]

Pride History Deltaswap/Underswap

I wanted to post this on pride month but I was on vacation and took a break from Tumblr to spend time with my family

And instead of waiting til next June I'll just post this now

Here are all the DeltaSwap and UnderSwap characters sexualities (some might change and everyone's entitled to their own headcannons)

DeltaSwap:

Noelle: Gender Fluid and Sapphic (Still likes Susie)

Berdley: Omnisexual

Temmie: Trans Fem and Demisexual

Clubboy: He's 6 he hasn't figured himself out yet and doesn't know what any of this means so let him be

Nubert: It/It's pronouns and Aromantic

Sweet: Straight

Capn: Bisexual

Kakes: Gay

Swoetche: Gay (and maybe a closeted drag queen)

Addisons: All use They/Them. Pink is attracted to men. Blue is bisexual (and had a former secret relationship with Spamton). Yellow is Aroace. Orange is Asexual.

Hacker (Checkwalker): Omnigender and Omnisexual and Omni-being

Queen: Straight (likely homophobic as well. I know people won't like that, but that's how people be and I'm trying to be realistic)

Susie: Lesbian

Kris: Non-binary and Pansexual (has a huge crush on Berdley)

Clover: Omnisexual

Jevil: Gender Fluid and Pansexual

Seam: Gender Fluid/Non Binary (debating whether they use they/them exclusively since they technically are multiple entities and therefore also would use We/We're or would switch pronouns depending on their form)

Rouxls Kaard: Gay (and definitely a drag queen. SLAY) has a crush on King but King doesn't have the same feelings

King: Bisexual (has 7 ex wives and 2 ex husbands. Poor guy :()

C. Round: Omnigender; Omnisexual

Asgore: Bisexual

Toriel: Straight

Undyne: Lesbian

Alphys: Bisexual

Mettacrit: Gender Fluid; Gay

Napstablook: Non Binary; Aroace

Papyrus: Gay; Asexual

Rudolph Holiday: Straight

Carol Holiday: Dead (Formerly Bisexual)

Dess: Trans Fem; Omnisexual

Asriel: Omnisexual

Geeson: Straight

Alvin: Straight

Mrs. Boom: Lesbian

Monster Kid: Non Binary; Asexual

Snow Drake: Trans Masc; Bisexual

Catti: Straight

Jockington: Aroace

Ralsei: Demisexual; Gay

I think that's all the characters if I missed one ask in the comments

UnderSwap (most are similar to above):

Chara: Non Binary; Aroace

Temmie: Gender Fluid (I believe I either have a post or am working on one explaining the confusingness of Temmie's identity but just know they don't care what they're referred to but uses She/Her mostly to try and differentiate from MK. She is not trans and wishes to go back to being MK but also wants to alienate this form from MK); Aroace (Has no feelings)

Asgore: Bisexual

Papyrus: Gay

Sans: Bisexual

Alphys: Bisexual

Undyne: Lesbian

Toriel: Straight

Napstabot: Trans Masc; Pansexual; Asexual

Mettacrit: Gender Fluid; Gay

Asriel: Demisexual; Omnisexual

Muffet: Bisexual

Grillby: Aroace

Mad Okie Dokie (So Sorry): Trans Masc; Omnisexual

Dogamy: Straight

Doggo: Gay

Lesser Dog: Demisexual

Doggeressa: Straight; Asexual

Muttler (Endogeny): Aroace

Ice Cream Pants (Burgerpants): Gay

Burger Guy (Nice Cream Guy): Bisexual

Gerald (Elder Puzzle Master): Straight

Rabeca (Bunny Girl): Pansexual

Flowey: ???????????

Bratty: Lesbian

Catty: Sapphic

Rg 1 & 2: Gay but not dating

Gaster: Non Binary; [RELATIONSHIP STATUS REDACTED]

Annoying Dog: ??????????????????????????

MK: Non Binary; Aroace

Frisk: Gender Fluid; Asexual

River Person: Genderless; [RELATIONSHIP STATUS REDACTED]

I believe that's all the characters

Again if I'm missing any ill be happy to but Them in the comments or maybe update this post