I've made up my own headcanons for A Devil's Life. :3 hope you enjoy.
Tristan is 6 yrs older than Steph and Steven while Jase is 7 yrs younger than them.
Steven was born at 9:26pm, exactly an hour before Steph (she was born at 10:26pm).
Jase sees Steph as a mom and Steven as a dad.
When Steph was nine, she tried to hang herself. Steven found out and had to calm her down. That was the first time they ever saw Raven.
All four have MPD (Multiple Personality Disorder), but only the twins have insomnia.
Each personality has a name and eye color to tell them apart (list later on).
Steven gets jealous when a guy hangs around Steph.
Tristan has had too many break ups. This is mostly the reason he's silent.
The twins are very self conscience about their demon eye. Thats why they hide it.
Since she was 3, Steph has been picked on and called "Freak".
Steph and Steven don't like anyone touching each other. So, they pretend to date to make sure no one dates them.
Even tho Tristan is the oldest, Steph is the leader of the group.
Jase is the only innocent one.
They all wish they could go back in time to be with their parents one last time.
Steph loves being called Stephy, Sissy, Puppy, Mom, and Freak.
Steph is actually bisexual and has a good relationship with MacKinzie.
Steph is a major pervert when she sees a girl she likes.
Since they're demons, they can scream like Andy Biersack, Dahvii Vanity, Vic Fuentes, and Kellin Quinn when singing.
They're all actually really silly but hide it with seriousness.
Steph and Steven used to be models. They stopped after an accident with the light exploding and killing the camera man.
Steph has little demon bunnies hidden in her closet. Her favorite two are Pat and Loki.
Steph is mentally unstable. This caused her to go to an insane asylum dozens of times.
They're tails and ears are extremely sensitive. When you touch them, they either moan or growl.
Steph almost killed a person for being mean to Jase.
Jase is actually terrifying and strong.
Steph is sometimes mistaken for a guy coz she's so flat chested and she looks like a guy.
Autotuning their voices for too long makes their throats hurt.
All four can speak fluently in all languages.
Steph has a fear of geese. Its been there since she was 2 coz a goose attacked her stroller and scratched her up. She's been scared ever since.
HeroBrine and Steph don't get along very well. They fight and sometimes try to kill each other.
HeroBrine wants Steph to be proper, but she never listens and is totally boyish.
While Steph loves chocolate, Steven has a massive soft spot for sour candy.
Steph actually has an old straight jacket she took from an insane asylum. She tore off the buckles and wears it as a shirt even tho it has blood all over it.
Raven is the real reason Steph tried to hang herself.
Steph can rap, but every time she does, she raps about her life or suicide.
MacKinzie is the reason Steph killed her parents.
Steven has a drinking problem. He mostly drinks Red Bull.
Steph is a sobbing drunk, Steven is a slurry drunk, Tristan is a flirty drunk, and HeroBrine is a loud drunk.
Steph once blew up a hospital and a school. They were both on purpose.
They all can play the violin perfectly. They just don't show it.
Steph is madly in love with cats.
Steph only had one childhood friend (Light Yagami from Death Note). He was the only one who knew about her powers.
Steven has a small crush on Steph. But he knows that it'd be weird to ask out his own sister.
They all have Italian in them from their mom and Russian from their dad.
Steph and Steven can't be seperated for more than five hours. If so, Steven twitches and shakes and Steph breaths funny and becomes paranoid.
Steph once dated a girl named Jessica. They broke up coz Steph found out that Jessica was using her to make someone jealous.
Kitty was the one who taught Steph how to dance.
Kitty and Steph met when Steph was 8. They've been best friends for forever and are practically sisters.
People think that since Kitty is an angel cat and Steph is a demon wolf that they wouldn't get along and hate each other. But it's opposite. They love being around each other, hanging out, and singing together.
Steph can't touch a cross, Bible, or holy water without getting burned. If she goes into a church, it makes her weak and go unconscious.
Steph has monophobia, the fear of being alone. She's scared that everyone that she knows will leave her and never come back. So she sleeps with Steven in his bed.
The whole family are Otakus and love to cosplay.
The Brine family resemble the Five Nights at Freddy's crew. This wasn't planned, of course, coz they were made way before FN@F was ever made. But Steph resembles Chica, Steven resembles Freddy, Tristan resembles Foxy, Jase resembles Bonnie, and HeroBrine resembles Golden Freddy.
Steven and Steph's pranks can easily become deadly. They almost gave someone a heart attack by jumpscaring them.
Tristan plays football. The others help him practice before games.
After she killed their parents, the rest of the family soon died after natural causes. Steph still blames herself for each death since the beginning.
Steven loves being the cute boyfriend type. He practices on Steph as their dating act.
HeroBrine tries his best to keep the kids away from mortals. He doesn't succeed in doing so.
Steph tries to act tough in front of Jeff to impress him. It never works out. She ends up getting hurt and he has to take care of her.
Steph and Nina once got in a fight over Jeff. They almost killed each other in the process.
Jase can't pronounce words with "ch" in them. Instead, he says "sheck" (check), "shange" (change), "hatsh" (hatch), etc.
Steph calls bunnies "fluffy creatures".
Jase's birthday was coincidentally the same day as Pigglepickle's b-day.
That's all for now. Next chapter, there'll be a surprise for you guys. :3
