I dont care if yall dont like these, they're my headcanons after all.

Blue: 
-he/him
-Gender roles do not apply to him
-A bit chubby and self conscious because of it
-Strong as hell—
-Gives off a permanent chill, and has very minor ice powers(can make things colder, and can make tiny knives out of ice)
-Blueberror and Blue are sort of one person in my headcannons. Like, Blue glitched out after Error kept him in the anti-void too long, but he got sent back to his au and a reset sorta made him better. But he can still glitch occasionally, and can open portals now

Dream: 
-What’s a gender?
-Uses any and all pronouns and doesn’t care
-Skinny as fuck, needs to eat, feed the baby—
-Gives off heat, but not much
-Wears gloves to cover cracks on his hands
-Lots of scars, he hates them, help him
-Glows depending on mood(bright if happy, dim if sad, sorta like that)

Ink:
-Gender-fluid
-Magic is clear with rainbow splotches
-Shorty—
-Has a French accent, nobody knows why
-Decent memory? Who’s she?

Nightmare:
-Same view on gender as Dream
-*Slaps Nightmare* “This bad boy can fit so much chub in him—“
-He owns multiple dresses. He refuses to let the others see them.
-Fangs? Fangs!

*Dream and Nightmare are not brothers in my au. I headcannon that the villagers always said they were and they got tired of trying to correct them, so they just went with it.*

Dust;
-he/him
-Tiny man, taller than Ink but not by much
-Way too much magic to be healthy
-LV flares are common and they suck
-Quiet, but just as much of a dumbass as the others
-Yes he has his pet rat. His name is Plague. He’s best boy—

Horror
-he/him
-Tall boi—
-Literally tall as fuck, how—
-Very limited magic
-Best cook, Blue comes close, but H is better
-Precious baby, he purrs too, omg!
-‘Head empty, no thoughts’ is a common look on him

Killer
-he/him
-Gender roles, schmender roles
-Knifu is best wifu
-Flirts as much as Lust, wtf—
-Pranks are common, never trust him
-Little gremlin, he hoards everything

Cross
-he/him
-Little soldier boy
-Precious child, protect him
-Only one with fucking morals
-Anime nerd, one of the only times he and Killer get along
-CHOCOLATE

Error
-he/they
-CHOCOLATE 2.0
-No touchy
-Murder? Yea sure!
-“Fuck off Ink—“
-Gives dolls to those he likes
-Blue, Dream, and Nightmare all have dolls
-Cross is getting one too

Lust:
-he/she
-Wears what he wants, when she wants
-Knows many of the Romance languages, uses them constantly
-If you don’t want it, he don’t want it
-Flirty, only rivaled by Killer
-Alcohol tolerance through the roof, wtf
-Help the poor baby, she deserved so much better—

Geno:
-he/it
-Masochist to rule them all—
-good buddies with Error, Dream and Nightmare since they all visit him regularly
-Blue tries to visit, takes him a while since he isn’t great at portal making
-he a glitchy boi, can do it intentionally sometimes