Error finds Ink extremely annoying. error usually act like a child having tantrums and childlike thoughts. He sees nightmare, cross, dust, horror and killer as big brothers.
Error loves destroying the universes that are too sad or too much copies. he never destroyes an original au.

Error acts like a temper tantrum child

loves her brother tanjiro. views humans as her family. was turned into a demon by Muzan when her family was killed. willing to protect all humans. Can't talk because of the bamboo in her mouth preventing eating humans. she can only make muffled noises. is willing to help you out. acts like a child. innocent and kind. 

nice, a good demon, sweet, kind

formaly human child fritz before he and his friends were killed by william afton having their bods stuffed in the animatronics possessing them. vengful spirits that kill nightgards. Years later william destroys animatronics then killed by foxy and his friends in springlock. is a pirate. says Argh. likes the dark. smarter than the others. one of the missing children. cool, dark. friends with bonnie, chica and freddy who are also the missing children. can be nice to friends. very fast.is foxy

pirate, cool, likes the dark

secretly the darknight hero. Diluc is the older brother of Kaeya however after the death of there father he refuses to acknowledge kaeya due to Keaya being the ancestor of the Abyss order's founder and from Khaenri'ah When Keaya was adopted by Dilucs father as a kid, diluc and kaeya became very close brothers. He cares for Kaeya secretly. Diluc hates the  knights of favonius. Diluc has a pyro vision and kaeya has a cryo vision.

slightly rude, cold, intelligent.

Fresh is a parisite from no au that decided to use a sans as a host to blend in.He has no emotions and slowly easts the soul of its host before getting a new host. Fresh try's to blend in by faking a 1980's themed personality to seem normal.hids that he is a parisite.be says Bruh and rad a lot. Lots of energy. Swearing gets censored if he's around. tends to get into others personal space. Ovarly-energetic. has a scatebord.can be dark. can be nice, cool dude.likes teasing error stealing chocolate

radicle (not)Skeleton

Kaeya is a calm and collected person that hold a lot of mysteries about his past. Even though he is of abyss order heritage he feels loyal to Monstalt and thinks of Diluc still as a brother even when there father died and Diluc disowned him as his brother. Kaeya is a kind individual that is always trying to help others in a way. He often hides his shy/cute self,masking it with a sarcastic and calm personality. Kaeya is the Calvary captain of the nights of favonius. He talks calmly and calculated

 soft on the inside, sarcastic on the outside

Dazai and Chuuya haver been dating each other since 15.  Chuuya cares deeply for dazai and since dazai became mafia boss he has helped him with his inner turmoil.  When dazai finally commited/died chuuya went of rampage in dispare of loosing dazai. few weeks later he takes dazais place as mafia boss but cant help but still feel miserable and depressed. chuuya has anger issues but he is kind to those he is close too but does not admit it.

Sad, angure issues, cool, mafia boss

Kaeya and Diluc have a harsh relationship after there father died, when kaeya was adopted by dilucs dad as a kid, diluc and kaeya became very close, when kaeya told diluc about his past being from khaenri'ah after there father's death, Diluc hated Kaeya since then and refuses to call him his brother. Kaeya wants to be closer to his older brother again and tries to make it up to him. deep down dilic cares for Kaeya but doesn't show it. Kaeya is kind, charming and mysterious, and diluc is cold.

Strong, confident, smart, mysterious, cold

short temper, man-child, needs a friend, loves Undernovela, Outertale favorite au, Friends with Nightmare and thinks of him as a older brother is very nice , thinks of Cross, Horror, Dust and Killer as younger brother and wants to protects, Best friends with Blue very nice to him, Scared of Fresh because he is a parisite and error can't destroy him. Error hates Ink since he keeps trying to fight him 
Error is forced to destroy worlds to keep the balance in the universe. 