What do these characters have in common? #4

Murderous and all insane

they all have the color black

no

They all want to kill Boyfriend

no

they all have weapons
eteled an axe
dusttale sans and the trollge guy have powers
mdm!lila those claw things

noo

they all wanna kill boyfriend

no

Hint: something about their songs

all their songs have references in them

all their songs are bangers

True, but not the answer

all their songs are hard

Edgy af

All of their songs are named after fears of something

you get this ice cream 🍦

:)

their all insane
Eteled since he was trapped
stairway since he killed someone
MDM!Lila was turned fully into a monster
Dusttale!Sans do you want an explanation (from someone who has been in the undertale community)?

no

was that for the explanations or the answer
and if it was wrong I am going to guess the song mechanics
in the eteled minus mod it changes to first-person
stairway is constantly rotating between cutscenes and song (moving screen)
MDM!Lila has a moving screen
Dust!sans flips the screen upside down

Hint: Something in their songs

Scream?

Insane and guilty and they are genocidal