Hey guys! I decided to compile headcanons for the different fandoms I decided to put in this book. It includes Sanders Sides, Magnus Chase, Undertale, Gallifrey Falls, and Gravity Falls. This is just to fill you in a bit more on extra things in the fandoms I'd like to put in my version. Enjoy!

Sanders Sides:

-Virgil has freckles speckled over his cheeks and nose that he hides with pale foundation

-Virgil is the shortest side and Roman likes to tease him about his height

-Roman can pick up all the other sides Bridal Style; they all blush when he does so

-Logan makes origami when he's stressed

-Patton has almost every board game that ever existed

-Virgil once mumbled in his sleep, "What the tic-tac" during Movie Night; Roman still teases him about it

-Virgil is the youngest side

-Deceit has fangs

-Virgil sleeps curled up on himself alone but cuddles the person closest to him when sleeping with the other sides (normally after Movie Night when they almost always fall asleep on the couch)

-Roman is an inch taller then Logan (and Patton's only a little shorter then Logan)

-Virgil can do the splits with ease

-Patton owns three Magic 8 Balls and uses them more then he will ever admit

-Virgil shape-shifts into a kitten for 24 hours when he becomes extremely stressed

-The amount of sugar Roman and Patton eat terrifies Logan

-Whenever he's startled, Virgil will pick up the closest side in case they're in danger

-Virgil knows how to moonwalk; he likes to moonwalk away after he won an argument

Magnus Chase:

-Nico and Alex speak several different languages so whenever they hang out they just insult people in different languages

-Blitzen thinks all flying creatures are ducks (except dragons)

-When they play Uno, Hearth and Alex are basically the only survivors and Blitzen always cheers for Hearth, who usually wins

-Magnus. Always. Loses

-Blitzen is pretty bad too

-Magnus sometimes visits CHB; Mr.D always calls him Mango Cheese

-Alex is banned from charades hotel-wide

-Mallory makes fireworks; she once set them off during dinner

-Everyone on Floor 19 ships Blitzstone

-Halfborn likes sliding down stair railings; He once raced Alex and they ended up dying

-They argued about who was the winner for three days afterward

-Tj and Carter Kane are distantly related

-Going to karaoke to the death once every two weeks is a tradition for Floor 19

-Magnus is oblivious as fuck

-Seriously

-Alderman doesn't respond to Hearth's sign language, so Hearth once cussed him out

-Alderman finally gave in and locked Hearth in his room

-Totally worth it, though

Undertale

-Monsters can look in a human's eyes and see their thoughts, feelings, and intentions; Sans and Papyrus are better at seeing and deciphering them then usual monsters

-Sans and Papyrus are boss monsters, though Papyrus doesn't know

-Sans has an amazing internal clock and knows exactly what time it is without looking; he got this from staying awake all night which always goes by too slow

-Papyrus once tried to do graffiti to be 'cool'; His said 'Sorry about your wall'

-Sans and Undyne's mother, Seadollar, collected the human souls; Sans killed Justice, Bravery, Integrity, and Perseverance, he couldn't bring himself to kill Kindness or Patience

-Sans is the Royal Judge; no one except Asgore and Gaster knew this

-Sans doesn't know how Papyrus died in the Genocide Timeline; He could never bring himself to watch the tapes

-This list is mostly about Sans

-What do you expect he's my favorite character in Undertale

-Like Paps is a close second but Sans is my fav

Gravity Falls:

-Ford once ended up into the Mirror Dimension

-Dr. Strange found him and was like, "What the heck are you doing here; also how"

-They try to hide their hands from each other then proceed to go like, "Oh hey, my hands are messed up too"

-They share a nice cup of tea because reasons

-Mabel makes jokes all the time about space while around Dipper

-Ford has the fluffiest hair in existence

-Like, so fluffy

-Mabel realizes this fact and Ford is forced to run away screaming, fearing for his life

-Mabel catches him with her GRAPPLING HOOK

-She didn't hit him or anything don't worry she just used it to get close enough and tackle him

-Stan made scars on his hands so the Pines Family would think he was Stanford

-Then Sherman visits the Mystery Shack and accidentally sees both brothers and mentions the scars

-And Ford says, "But he never had the extra digits!"

-And Dipper comes in and says, "So either he had some amazingly well-placed scars or..."

-And everyone turns to Stan

-And Ford is staring at him with shock and horror and realization and why didn't he notice he should've noticed he's such a horrible brother-

-So Ford has a panic attack and both Stan and Sherman have to calm him down so Stan can explain that he hurt himself because he couldn't have the Pines realizing Ford was gone and they were getting suspicious about why 'Stanford' was always wearing gloves

-Ford hisses at him never to do it again

-Dipper has scars from when Bill possessed him and stabbed his arms with forks

-When Mabel finds out she tells Dipper that he has to tell Stan and Ford

-He does

-Stan asks if he can bring Bill back just so he can DESTROY him for hurting and scarring Dipper for life

-Ford reluctantly denies that request

-But they do go to Bill's statue and FUCKING DESTROY IT

-Ford has scars from all the dimensions he's gone through

-He doesn't write about them in Journal 3 'cause he knows Dipper reads it and doesn't want to hurt his nephew

-Yes, everyone has scars

-I'm basically the ruler of angst

-Not King or Queen

-Non-binary get it right

-Anyway yes I'm angsty dealt with it

-Did I just say dealt instead of deal

-yes did I fuckin stutter

-I'm just kidding pls be nice to each other

-Ford is the smartest, Stan is the wisest, & they're both the biggest dumbasses in the multiverse

-They teach Dipper and Mabel in the ways of being stupid

-It's working

-Tad Strange is actually Victor Strange, as in Stephen's brother

-He kept discovering monsters in Gravity Falls so the Blind Eye had to erase his memories again and again

-They did it so many times that Victor forgot who he was and everyone started calling him Tad and he just went with it

-But he saw monsters so many times so he is not fazed at all; ever

-Even with knowledge of his memories no one knows how he ended up on the other side of the country

-But Hydra revived him so that's how he's not dead

-HYDRA ARE BEEF JERKIES

-Kaden? Wha- GIVE ME MY PHONE BACK

-NEVER! MUHAHAHA!

[TECHNICAL DIFFICULTIES. PLEASE STAND BY]

-It's a good thing Kaden is ticklish

-Anyway

-Dipper, Mabel, Stan, Ford, Wendy, and Soos all helped him get his memories back

-Victor tells them about his life and crap

-Then Stephen comes to Gravity Falls on a mission or something 

-Probably to figure out why a tear in their reality randomly appeared out of nowhere 

-Anyway, he enters the Mystery Shack

-Like Victor is literally explaining everything and they suddenly hear Stephen calling to see if anyone is there

-And Victor is pushed out into the gift shop by Mabel

-Stephen stares at him in shock for like ten minutes

-They reunite

-Mabel cheers and may or may not be crying in happiness

-It's beautiful

-Stan makes Stancakes to celebrate

-No one eats them

-STAN HAS A SAD

-Okay hOW THE HECKTY HECK DO YOU KEEP GETTING IN HERE? THIS IS AN EMPTY VOID WHERE MY HAPPINESS SHOULD BE

-I used the backdoor

- ...fair point [No idea why I put that there]

-I got some ideas for character sexualities too

-Hint: No one is straight

-Ford is Pan

-He dated Fiddleford, a siren, and probably that girl who threw punch on him of course he's Pan

-Stan is Bi

-I'm not saying he dated Rick Sanchez but he totally dated Rick Sanchez

-And also Carla but shush

-Mabel is gay for Pacifica

-Dipper is Trans and Pan fight me

-Soos is Queer

-Wendy is a badass Bi

-Ford calls Fiddleford Fidds

-Evidence?

-There was only one bed in the bunker

-Also I do what I want

-Before the portal, Ford was shorter than Fiddleford

-Like, to Fiddleford's ear

-Now he's the tiniest bit taller than Fidds

-Mabel calls Pacifica Paz

-She was totally staring at Pacifica all night at the Northwest Mansion

-She was arguing with her friends about that prince? Pfffttt nooooo what are you talking about you silly laundry basket

-I literally have no idea if that could be considered an insult

-Like, they're girlfriends since Northwest Mansion Mystery and Dipper has no fucking idea

-But then, on Dipper and Mabel's birthday, Mabel pulls Pacifica on stage, throws a massive glare to her very surprised parents, and kisses her in front the entire town

-They cheer loudly

-Wendy says, "Finally" and sips her Pitt Cola

-Ford says fuck it and grabs McGucket

-Hey that rhymed

-But yeah Stan and Dipper find themselves surrounded by their gay twins

-They're so, so proud

-Stan flips off the Northwests, smirking

-Waddles sticks his tongue out

-The Northwests loudly call them all fags

-There's this sudden, angry silence

-Everyone glares at them with fires blazing in their eyes

-Dipper just nods to Derlin and Blubbs, who hold up two hand cuffs and police batting sticks

-"Preston and Priscilla Northwest, you are under arrest for mistreating the LGBT+ Community," Mabel makes a motion of sorts; Blubbs nods, "Mistreating and abusing your very own daughter, both verbally and quite possibly physically, and welcoming an actual demon to our town."

-Stan calls good riddance, all the LGBT+ couples kiss while the few straight couples cheer with support, and Pacifica is no longer abused

-Pacifica gets adopted by Soos and Melody and lives at the Mystery Shack

-McGucket offers to get all her stuff from the Mansion, but she tells him to burn it since she hated it all

-They do keep all the stuff the reasonable Northwests found over the centuries 'cause hey there's some pretty cool stuff there

-That amazingly isn't cursed in any way, shape, or form

-Pretty rare in Gravity Falls

-Gideon finally decides to not be a dick and apologizes. He congratulates Mabel and Pacifica

-Mabel slaps a sticker on him that says, 'Not as big of a jerk as we thought'

-Gideon figures that's more gratitude than he deserves and leaves

-Then a unicorn comes out the forest and explains that each unicorn represents a different sexuality

-Celestabellebethabelle is the unicorn of... nothing and she's a jerk because of it

-What did you think she'd represent the gays

-No that's just cruel

-Grunkle Stan is saving money for Dipper and Mabel's collage funds

-Gideon sees Plankton from Spongebob as a role model

-Grunkle Stan also watches Spongebob and sees Mr. Krabs as a role model

-When he lost his hands and Mabel made some new ones for him, he was hoping that they would be crab claws

-Wendy has 2 middle names

-Silas, meaning Woods and/or Forest in Latin [since she's a lumberjack's daughter]

-Esteban, meaning Crown in Greek or Spanish

-Both of which are boy names

-Fuck gender norms

-But yeah

-Her full name is Wendy Silas Odysseus Corduroy

-I meant Esteban not Odysseus where the heckity heck did that come from

-Middle names are fun I'll do some more

-Ford's middle name is Ender, meaning Very Rare in Turkish

-Stan's middle name is Finley or Fionnlagh, meaning Fair Warrior in Irish

-Which was entirely his mom, who actually saw his perks

-By the way, #FuckFilbrickPines

-Also, I don't care if Stan and Ford have official middle names these are headcanons and their dad was a dick

-Mabel's middle name is Citlali, meaning Shooting Star in Aztec

-Which I don't think any Faller would be surprised to hear

-Dipper has 3 middle names

-I don't know why

-Just blame Kaden [who's my friend, btw]

-#BlameKaden

-HEY

-But yeah here are Dipper's 3 middle names

-Essie, meaning Star in Persian

-Tikvah, meaning Hope in Hebrew

-And last but not least, Oren, meaning Strength and/or Pine Tree in Hebrew

-Two of these names are girl names [Again, fuck gender norms]

-The reason they aren't all girl names is that Oren is a boy name but worked so well that I had to include it

-It'd be stupid if I didn't

-Because Pine Tree

-Same with Mabel because Shooting Star

-Every Pines has hazel eyes, but not all the same type of hazel eyes

-Type? Does that make sense?

-Ya know what

-I don't care; I'm calling it type

-But yeah; Ford, Mabel, and Caryn both have hazel eyes with gold flecks

-(Wait why did I say both when talking about 3 people what the hell past me)

-Ford's actually are particularly green

-It's like vitiligo but the regular skin is the hazel part and the patches are green

-(I'm sorry if that's somehow offensive to anyone I have literally no idea how vitiligo works)

-Stan has dark hazel eyes

-Dipper has light hazel eyes

-Fun to headcanon? Yes

-Biologically incorrect? Yeah, probably

-HEY THAT'S MY LINE

-You steal my lines plenty of times

-Payback's a bitch

-Micheal? Okay, you guys seriously need to stop breaking into my void

-Kaden keeps breaking into mine, so yeah. Again: Payback's a bitch

-Why my void? I didn't do anything! Go to Kaden's void!

-He doesn't have a void. He actually has a heart, remember?

-People still have those?

-Apparently

-Ugh I hate being interrupted

-Much like koalas

-JK I meant giraffes

-Ya know the weird-looking dogs

-ANYWAY

-One day Mabel finds a time tape and uses it to save Fiddleford

-The way it works is that Fiddleford wakes up in an actual house and not insane and stuff and he remembers his new past but he also remembers his old past???

-And he's like "Ok how"

-And he goes to the Mystery Shack and asks what happened

-Then Mabel pops into existence out of nowhere and terrifies Ford who does a full on spit take

-Stan would've fallen over in surprise but Ford recovers and catches him

-Dipper squeaks in a high-pitched voice

-Then Soos decides to join in on the shocked reactions and faints

-Anyway Mabel explains and Fiddleford is like "Thanks but why????? That was dangerous?????"

-Is that enough question marks????????????????????????????????????

-But she's like "I mean?????? You shouldn't of had to suffer so much for so long!!!!! At least Ford saw some pretty cool worlds in the portal and learned a lot but you just kinda suffered!!!!"

-Fiddleford has freckles on his shoulders

-And Ford has some behind his ears

-That doesn't make sense does it

-Ugh whatever these are headcanons

-They don't have to make sense

-...right?

-Anyway Wendy also has freckles, just all over her arms and back

Gallifrey Falls (my personal AU):

-Kelly got her eye clawed out by a hellhound; she normally hides it with her bangs, making everyone think she still has her other eye

-Ruby is very prideful and doesn't like to admit she's wrong

-Ruby has the soul of Determination; Cal has the soul of Patience; Carly has the soul of Kindness; Cally had the soul of Bravery; and Kelly has an extremely rare soul, the soul of Love

-Cal's full name is Calel; Like Superman's name but with a C

-Gallifreyans actually prefer extremely hot temperatures

-What with having two suns and all

-That's why the doctor always has long sleeves

-And why the Gallifreyan Counsel have so many layers of clothing

-Or maybe that's canon

Marvel-

-Tony watches Red vs Blue. His favorite character is Sarge

-Tony learned Italian before he learned English. He prefers to speak Italian but doesn't because nobody else knows it

-Stephen also knows Italian. He had a friend who was terrible with English so he just learned it to make it easier on them

- In an alternate universe, Peter is a Greek Demigod and is the son of Apollo. He sometimes speaks Ancient Greek without thinking

-In that universe, Percy is his BF and Annabeth is with Piper, while Jason is with Reyna

-Donna Strange was revived by Artemis and became a hunter

-Peter knew Stephen in that universe so when Donna introduces herself he's like, 'Holy shit you're alive????'

-Donna explains what happened

-In another, Peter was the fallen child who possessed the Soul of Kindness. He comes back to life, soulless, and becomes the Cloak of Levitation

-The monsters come to the surface, and Stephen confronts them, only for his Cloak to float forward and hug Papyrus. Sans realizes what the heck is going on and gives him back his soul. Peter turns back

-Stephen is confused beyond confusion

-It's one of the weirdest AUs I've made, I know

-I'm like that sometimes

-Honestly I have no idea how my friends deal with me

-Victor Strange was revived by Hydra and is a former Winter Soldier

-Tony found him alive in the Siberian base and helped him out

-Victor lives at the Compound and explained his past to Tony, Rhodey, and Peter once he remembered

-So when Tony and Peter are on a walk and Stephen shows up introducing himself, they glance at each other like, 'Could it be???'

-"So wait, Stephen Strange as in... middle name being Vincent???"

-"...Where the fuck did you get my middle name"

-Tony and Peter glance at each other like, 'Holy shit dude'

-Stephen sees his bro again

-And cries

-Peter makes cupcakes

-Correction: Peter tries to make cupcakes

-Tony: Damn it Pete I just got this rug

-Stephen has to reverse time so the kitchen doesn't burn to ashes

-Stephen was actually born with his name being pronounced 'Ste-FEN' but when he was five someone got it wrong and told everyone it was Ste-ven and he stopped trying to correct everyone

-He introduces himself as Ste-ven because he doesn't wanna confuse people by saying his real name so he lets everyone think it's Ste-ven

-Peter finds out

-Then Tony finds out

-Stephen wonders if pushing his boyfriend off a cliff is really such a bad idea

-Peter's nicer about it tho so he gets to stay

-Wong laughs

-Stephen wonders [once again] why he considers Wong a friend

-Just as I wonder why I consider Kaden my friend because he WON'T STOP BREAKING INTO MY VOID WHAT THE GOSH DING DANG HECK DUDE

-Heh

-ANYWAY

-There's yet another AU where Peter works at the Mystery Shack and goes on adventures with the gang

-He's the Spider Symbol on the Cipher wheel

-Because Spiderman

-I just said that as though a spider symbol already exists on the Cipher Wheel

-Tony calls him during the summer to see how he's doing

-Tony: "Hey, Pete. How's summer going? Is it good?"

-Peter, standing in the middle of the literal Apocalypse: "Umm..."

Merlin[BBC]-

-Gwen knew about Merlin's magic

-Gwaine knew about Merlin's magic

-Actually basically all the staff knew except Agravane and Arthur

-Arthur is oblivious as fuck

-Merlin is oblivious as fuck

-Gwen is badass

-Wait these are supposed to be headcanons not facts

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Well, guys, that's what I've got so far. There will be new ones, some will be changed, and fandoms may be added, like Wings of Fire, a fandom I'm already in. They will change with my tastes, and you are perfectly welcome to use them in your own stories (I can't stop you anyway because I made up less then half of them.)

If you use any of these in a story, please, send me the link. I would love to see how they turn out! Put them on my Message Board, so it's open to the public!

Never be Cruel and Never be Cowardly! Bye!