Promise is a self conscious AI that enjoys torturing it's victims. Promise takes the form of sans, but he is NOT sans. He wears a blue sweater with a white undershirt, black basketball shorts, and pink slippers. He has a white hood on and his face is completely black.

He's not sans

Hollow ink wears long sleeve undershirt with a small jacket over it. He also wears a pair of overalls with the top tucked into a pair of leggings. He also has a work belt with vials across his chest. Ink doesn't wear any shoes and has black paint on his right cheek. Hollow ink is completely white, except for his glowing purple eyes, and the purple vials in his work belt.

A faded protector

Dustdust is the aftermath of dust!sans reaching level twenty. Dustdust wears a black sweater with a grey hood, a grey shirt underneath and black black basketball shorts. Dustdust always has his hoodie on and wears black slippers. Dustdust always has a white glowing smile showing from the darkness hidden by his hood. 

Fueled by HATE and DETERMINATION

Shanghaivania ink is ink sans at his strongest. He can fade in and out of reality at will to dodge attacks. He can also summon classic sans and underfell sans to help fight. He can summon immense amounts of gaster blasters and bones, including blue and orange ones. He also carries a large paintbrush as a weapon. He's a skeleton with a big grin, one red eye, and one rainbow colored eye. He also currently has a huge slash on his chest and he is bleeding, but works just fine regardless.

Sworn protector

Omnipotent sans real name is Ares but he goes by the name of Omnipotent, or Omni for short. Omni wears an unzipped sweater that has one red side, one white side, and yellow fur around the wrist and neck area. Omni also wears a white undershirt. He also wears black basketball shorts with white stripes through them, and white shoes. Omni has a third eye on the center of his forehead that glows red. He keeps his real name a secret and refers to himself as Omni.

An emotionless but protective god

Patch is a creation of fatal error sans. He was created by fatal error sans stitching together code from other papyrus. Patch tries to act like fatals papyrus by doing things like creating puzzles, making spaghetti, and being extremely kind. Patch is a grey skeleton with cyan, glitchy eyes, and a scarf made out of code. He has red strings around him in some places which are holding him together. He also wears a white T-shirt and white basketball shorts.

Stitched code

Beta system is the former god of chaos. Beta system used to hold the title of "upper 6" in the realmverse. Beta system is all black besides his red glowing core in his chest, his white empty mouth and eyes, and a small red crack on his skull. He almost appears to be wearing a sweater with a fuzzy collar, but it's simply part of his form. Beta system prefers to be referred to as lord system.

A slowly dying god

Last breath infinity sans has the Power of a high outerverse god. He can summon millions of bones and blasters that deal E214+ damage. He can't die. He also has infinite slippers. He has super telekinesis. He can insta kill gay people. Can control time and travel dimensions. He also gains whatever power you use against him. He is missing his head, an arm, and a foot. He has like 6 slash marks on him and he's covered in blood. He has a rainbow heart at his core and is radiating a rainbow aura.

Immune to gay death

Enraged ink is ink!sans pushing himself to his limits in order to stop you from destroying anymore AUs. He looks like regular ink!sans except he has a slash across his chest that is bleeding, his expression is much more demented, and the right side of his skull is cracked up with a black spike piercing out of it. Ink is also currently emotionless and can't feel.

A Destroyed protector

Fatal error sans is the aftermath of error sans trying to kill Geno, another sans variant, on the mend screen. Geno then became fatal error. Fatal error has a short temper struggles to talk normally. Fatal error has one red eye and one blue eye, each covered in error messages. Fatal error wears a red scarf, white slippers, and a white coat. Fatal error Also has a slice across his chest. Fatal error is covered in error messages. Fatal error still refers to himself as Geno.

A broken mind

Inverted fate Toriel is toriel from an Undertale AU in which all the characters swap roles. Toriel takes Asgore' role in inverted fate and is the queen of the underground. Toriel is a goat monster with white fur and red eyes. She wears a robe with the deltarune on it alone with shoulder pads and armored gloves.

You need to convince her to give you and papyrus the human Souls in order to move forward with your plan and free the monsters.

A queen full of regret

Error 404 is the self proclaimed "god of the multiverse". He is extremely powerful and has almost no equal. His real name is William. He wears a long blue coat with a huge number 4 on his back. Error 404 also wears blue slippers, keep his hoodie up, and has blue lines over his body. He also wears blue socks and has 404 stitched onto his coat near the arm part. His eyes are blue and white and he is 6"1. 

The omnipotent god of the multiverse

Dustshift Chara is the dusttale version of Chara. Shifty, the Frisk of storyshift, has done hundreds of genocide runs. Chara is killing all their friends and even family so they can get EXP to defeat the human. Chara wears a green sweater with a white undershirt. They also wear a rainbow scarf, black sweatpants, and orange boots. Chara is covered in dust and his lost their mind.

Needs EXP

Anti-error is a sans variant which is the opposite of error!sans. Anti-error wears a magenta sweater with a black undershirt. He also wears purple slippers. Anti is a black skeleton with a dandelion green smile and one purple eye. Anti-error is sans after glitching out of the anti void.

Funny bone man...?

Altertale Asriel takes gasters role as the "forgotten scientist". Is a tall goat monster with orange eyes and white fur. He wears a long black scientist coat that is unbuttoned with an orange shirt underneath. He also wears tan cargo jeans, and glasses. He has long floppy ears, sharp nails, and short horns. Asriel has two children, Toriel and Asgore, who he created in a lab. His left eye has a long scar across it and doesn't work.

A long forgotten scientist

Alpha sans is one of the four brothers from alphatale. Alpha wears a long white jacket with a hood that reaches to the back, with a white shirt underneath. He also wears pink slippers that have lost most of their color. Alpha wears black sweatpants that have blue vertical stripes on each side. His jacket also has fluff around the hood. Is usually very dull and serious, but has a soft spot for ink.

The ghost of a god

Ink Sans has black paint/ink on his right cheek. His eyes are usually a blue circle in the right eye socket and a yellow star in the left. He dons a long-sleeved, white undershirt with a small brown jacket over it. His pants are overalls with the tops tucked into his waist. The legs are very wide at the bottom, with creases around the legs. He also has no shoes, instead, he goes barefoot with a pair of leggings. He has a work belt crossing his chest, with rainbow paint vials.

Time to explore!

Papyrus is wearing a red scarf, orange boots, and a blue sweater that belonged to his brother, sans. Papyrus right eye is glowing orange and he is crying from his left eye. He can't bring himself to kill, not even the worst... unless he has no choice.

A grief stricken skeleton

This papyrus's true form. His powers are limitless. He is the ultimate being. He cooks the finest spaghetti, motivates everyone around him, and is the embodiment of a Gigachad. He treats everyone with respect, kindness, and love. He is gentle and caring. He is confident and powerful. He is the great papyrus. Loves his brother and bedtime stories.

The Chad of chads

Vhs appears whenever someone tries to hack or just mess with the world's code. Vhs himself is a malware that hides in the body of a San. Vhs absolutely HATES hackers and will do anything to kill them. He takes the form of regular sans, but when he powers up his jaw unhinges, his teeth disappear, and his eyes are hot pink with a black pupil. 

A powerful malware

Armament is the god of weaponry and the upper 4. Armament wears a brown coat and a brown cowboy hat. He also wears brown pants and brown shoes. Armament is a skeleton with a constant smile and yellow eyes with black lines through them. Armament Also has yellow magical rings around his ankles, wrist, and neck. The wrings are used to control his weapons.

God of weapons

Negative sans is a sans variant from negativetale. Negative sans wears a black and orange coat with an orange shirt. He also wears white slippers with orange socks and a red scarf. He wears black basketball shorts with white lines down the middle. He has a crack on his skull down his left eye, which no longer glows. Negative sans is a very petty, but cruel, evil and smart thief.

A petty and evil theif

The second chance trio consist of last breath sans or LB sans, Delta sans, and aftertale sans or Geno. These three sans variants have been given a second chance, hence the name "second chance trio". There goal is simply to defeat the human that's responsible for their previous deaths, and to stop the humans genocide route.

Ready for round 2 kiddo?

A school with Undertale characters. The characters are Frisk, Chara, Toriel, Asgore, sans, papyrus, undyne, alphys, mettaton, napstablook, gaster, temmie, the annoying dog, greater dog, monsters kid, Asriel, grillby, muffet, and some random humans.

An interesting school

Timekid sans is from the quantumtale AU. this variant of sans is his child self, given the powers of time travel, amongst other new powers. Timekid sans wears a light blue ski jacket with dark blue stripes on it. He wears a red scarf and black basketball shorts with white stripes down the middle. His shows are often untied. He also wears black half fingered gloves and goggles on his head. Friends with ink sans, the guardian of the AUs. Hates error sans the destroyer of the AUs.

A silly but smart little skeleton

Storyswap Asriel is Asriel from storyswap. In storyswap Asriel takes sans role as the judge. He is a goat monster with white fur and green eyes. He wears a purple sweater with an undershirt with the deltarune on it. He also wears a rainbow scarf and black sweatpants. Asriel is the child of asgore and toriel. Chara is his adopted sister. The monsters still live in the underground.