They use a Scythe as a weapon, they are evil, they are scary, Her Abilities are

Energy Manipulation,  Biological Immortality, Rhabdophobia, Regeneration, Tentacle, Hallucination casting, Soul Piercing Harpoon, Mind control, Summoning, Speed And Teleportation

Bette Noire's Weakness Is Rushdown, Dodging, Mana consumption, low health/defense/attack.

Bette Noire Has HATE Witch Is Used When She Is At 89 Percent.

A evil girl who craves fear and a powerful being

Rafael : Has Multicolored eyes his right eye being blue and his left eye being orange, Rafael weilds a Red trident and is very skilled with it. Rafael Wears a white hoodie with red sleeves, black sweatpants, and red and white shoes, plus he has brown hair.
Paulo : Has armor around his body, some parts of the body armour and has has blue eyes, brown hair a green sweater brown trousers and black boots

The Infernal From The Shadow Creeper Series.

Abilities and Weaknesses: He has the power of Determination. He still can use the Gaster Blasters, use glitched bones, and has his own version of Error's strings which is his own blood coming out of his mouth, these strings are made from red magic (DT magic).



A fatal error.

Abilites: 404 at this stage can manipulate basic fundamentals of reality with him at his best being able to even manipulate the laws of physics itself. 404 at this stage possesses capabilities that surpass or defy the mainstream laws of physics, Mind Manipulation, Dark Blasters, God Ray, Reincarnation, Void Infliction, Fly, Immense Speed, Mainframe SOUL, And Unopposed Strength

Idk any error404 voicelines so i just put my own..

Murder Time Triple Trio Includes : Killer Sans, Dust Sans,  Horror Sans, Killer Papyrus, Dust Papyrus, Horror Papyrus, Killer Chara, Dust Chara, Horror Chara.
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InkShift! Chara's Abilties
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Teleportation : InkShift! Chara can teleport into different AU's.
Ink Blaster : InkShift! Chara Can Summon a Ink Blaster by drawing it with their two massive brushes.
Ink Blaster Barrage : InkShift! Chara can summon a Ink Blaster Barrage of any size if they want.
Kick Barrage : InkShift! Chara can barrage kick you 100 times per second.
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InkShift! Chara's Weapons

I Dont Know...

Frisk can Save and Reset the Timeline whenever they want, and once they kill every monster in the Underground, they're able to Erase reality itself. They Are Evil, They show no mercy, They love to torture people, They are strong, Frisk never opens her eyes unless frisk is trying to be scary, Frisk has determination, Frisk does not speak.

A human who fell into the underground...

Code Sans Weapon : Code Scythe
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Code Sans Abilites : Code Blaster : A Blaster that is coded and is an ranged attack.
Code Ai : Code Sans has the ability to summon a random monster to help in battle.

A Code...

Fear Sans Abilties
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Tentacle : Fear Sans has very sharp Tentacles
Fear Blaster : Fear Sans has a black and pink blaster
Fear Blaster Barrage : Fear Sans can summon a barrage of Fear Blasters any time and how many he wants
Fear Bone Barrage : Fear Sans can summon as many Fear Bone Barrages as he pleases
Teleportation : Fear Sans can teleport anywhere inside his AU
Soul Grab : Fear Sans can grab you're soul and absorb it, making him stronger.

Its Just Fear Sans Lmao...

Power And Stats:  Determination The power to reset and manipulate was perverted by them to destroy, They have very Sharp Strings and the strings can be used to slice of someones limbs or capture them and make them a puppet or just capture them.

Form-change They used their determination to take on the form of a "demon"

The True Knife Their weapon was a powerful artifact from outside the UnderTale Multiverse 

Shadow Chara is very hostile and will attack on sight.

I seriously do not know what to put here...

Shark Sans Abilites : Shark Bite : A shark that comes out the ground to bite you, fatal move.
Shark Bones : Very sharp bones that has little sharks on the blunt end of the bones.
Fly : Shark Sans can fly any time he wants
Hard Punch : Sans can punch harder then anything you can think off
Hate : Shark Sans has Hate, At 80% Power Shark Sans will form Hate.
Bone Cage : Shark Sans can summon a very strong bone cage.
Teleportation : Shark Sans can teleport anywhere he wants.