Note: Unless otherwise indicated, these are also posted on AO3.

Fantastic Beasts

I’m Here

Creature Mischief—An Imagine

Cause and Effect

Salty Tea

The Niffler in the Shiny Palace

Theseus and the Donkey Prank

The Deathly Flare

Brotherly Closeness—An Imagine

Desperate Measures

Baby Newt Trying Ice Cream—An Imagine

First Steps—An Imagine

Playtime—An Imagine

Feeding Baby Brother—An Imagine

Unrequited Love—An Imagine

Newt’s Birthday

Birthday Celebration With Friends—An Imagine

Brotherly Love—An Imagine

Baby Juliet and Newt’s Coat

The Box Jail

Overwhelmed—An Imagine

Too Late—A What If (written as an imagine on AO3)

My Fault—An Imagine

Blue Roses (Headcannon Format)

Fantastic Beasts: The Chosen Ones Series

April Fool’s Prank

The Spaghetti Mountain and the Snowman

Fantastic Beasts: The Chosen Ones Prequel Series

None yet

Masters of the Air Multi-Chapter Stories

Do You Want to Build a Snowman? (Part 1)

Do You Want to Build a Snowman? (Part 2)

Do You Want to Build a Snowman? (Part 3)

Do You Want to Build a Snowman? (Part 4)

Dog-Shifter John AU (Part 1)

Dog-Shifter John AU (Part 2)

Dog-Shifter John AU (Part 3)

Fantastic Beasts and Masters of the Air Crossover

Theseus and His Troublemaker Siblings

Masters of the Air Fics

Broken—An Imagine

Worth It

Swan Lake (MOTA Edition)

Shot—A What If (written as an imagine on AO3)

First Vaccines—An Imagine (not on AO3)

Fantastic Beasts and The Day of the Jackal Crossovers:

The Reveal—A What If (written as an imagine on AO3)

Crossover and AU Ideas (not on AO3 as they're ideas, not full fics):

Fantastic Beasts in The Phantom of the Opera AU

Fantastic Beasts/Sherlock Funny Post

Fantastic Beasts Siblings AU

Fantastic Beasts in The Hunger Games Quarter Quell AU

Masters of the Air/The Greatest Showman

Fantastic Beasts in a Frozen AU

Fantastic Beasts Inspired by The Day of the Jackal With Some Crossover

Fantastic Beasts/Masters of the Air

Fantastic Beasts in The Hunger Games AU (Volunteer as Tribute)

Fantastic Beasts Love Potions

Fantastic Beasts Depressed Newt

Masters of the Air Unicorns

Fantastic Beasts Theseus Abducted Funny Post

Fantastic Beasts Reacting To Your Eating Disorder

Fantastic Beasts in a Jumanji AU

Masters of the Air in a High School Musical 1 AU

Fantastic Beasts in a Freaky Friday AU

Fantastic Beasts Masters of the Air Inspired Drunk Theseus Post

Fantastic Beasts Casting in a Snow White AU

Fantastic Beasts College AU

Masters of the Air Escape Attempt

Fantastic Beasts Newt Was The Only Scamander At The Rally Post

Theseus Feeding Baby Creatures—An Imagine (Fantastic Beasts fandom)

The Apex Predator—An Imagine (Fantastic Beasts in a Mean Girls AU)

Into the Ever After—An Imagine (Fantastic Beasts in a RWBY AU)

The Chosen Ones AU Info (not on AO3):

Valentine's Day

Uncle and Niece Play Dates

After Theseus grabbed the portkey that got them out of Erkstag, they were still holding hands when they stood up. Newt looked like he liked it, even though he didn't realize he was still holding Theseus's hand. Theseus, on the other hand, looked more neutral about it. When they realized what they were still doing, Newt quickly dropped Theseus's hand and looked at Theseus as if to say "Sorry, I shouldn't have still been holding your hand." Theseus made a little gesture as if to say, "I don't mind."

Newt also took Tina's hand in the first movie and ran while holding hands, even though holding hands wasn't necessary to run.

In the second movie, after he asked Jacob to take his hand while they were waiting for the illegal portkey to activate, he briefly swung Jacob's hand.

Conclusion: Newt likes holding hands.

Albus is Newt and Theseus's uncle. After the brothers' parents died, he took them in and raised them. They lived in an opera house and still do except Theseus, who moved out.

I think Leta would make an interesting Christine. She was broken, and The Phantom was, too. I think that would make her even more likely to sympathize with him, fall for his manipulation, and feel confused.

Newt is Leta's best friend since childhood. He's studying to be a zoologist but earns money working backstage in the opera house. He's got a lovely singing voice, but he isn't into performing. However, he's comfortable singing to Albus, Theseus, and Leta. He sings to and with Leta during the "Angel of Music" song.

Theseus met Leta after she moved into the opera house. He was polite to her as she was just Newt's best friend to him, but after some time, when they grew to become more comfortable with each other, he became a brotherly figure to her. He's four years older than her and Newt, who are 20. He works as a police officer.

Grindelwald is The Phantom. He's 10 years older than Leta.

Leta's backstory is a combination of what it was in Fantastic Beasts and what Christine's is in The Phantom of the Opera but with a few changes. Her father, who had never loved her, died when she was a younger teenager. She was then sent to live with her uncle, who did like her and treat her well. She loved to sing and wanted to be an opera singer when she grew up. He supported that. When Leta was 16, her uncle got deathly ill. He told her that after he died, he would search for the Angel of Music and send it to her. After he passed, Newt told Albus and asked him to take her in, knowing the alternative was the foster system. And so Albus did.

Years before that, Albus saw a homeless Gellert Grindelwald in a cage and getting bullied for having a disfigured face. Albus was disgusted by the bullies' behavior. He saved Grindelwald from them and let Grindelwald live in a lair in the opera house. He didn't tell anyone this though.

Sometime after Leta moved in, she went to a room to light a candle for her late uncle and brother. She then heard a voice speak to her. She didn't see anyone, so she thought the voice belonged to the Angel of Music.

They talked, and she told him of her desire to be an opera singer. Grindelwald had learned singing techniques from watching and listening to performers in the opera house while he had been living there, so when Leta referred to him as the Angel of Music, he pretended that he was. He then began to give her singing lessons regularly.

In the present day, Grindelwald, whom Leta also refers to as The Phantom of the Opera, makes written demands to directors to give Leta lead roles in operas. If they don't do it, he kills them. He also falls in love with Leta and tries to get her to choose him. He's very toxic about it though. His behavior alarms people, including Leta.

Albus confesses to Theseus, who's trying to handle the situation as an officer, that he let Grindelwald move in years ago and why. Albus doesn't agree with what Grindelwald does, but he still sympathizes with Grindelwald. He sees Grindelwald as a misunderstood man that was oppressed and hurt from it. Theseus gently tells him that Grindelwald has taken things too far.

Everything else goes according to the story except that she refers to her uncle, not her father, in the song "Wishing You Were Somehow Here Again", and after The Phantom abducts Leta and brings her to his lair, Theseus arrests The Phantom. She looks at The Phantom with pity as Theseus takes him away.

Newt comforts Leta as another officer drives the police car containing Grindelwald away. Theseus gets rid of the crowd and then joins the two after that. Albus comes, looks at the three of them sadly, and then leads them to the rooftop garden, where they can be alone.

Leta tells them she feels bad that The Phantom went through so much suffering. She thinks she deserves to be hated because she's a monster that "killed" her brother, but The Phantom was hated for an unjustified reason and that he became a monster. Newt is very tender with her and agrees that what happened to The Phantom is sad and that he didn't deserve that, but it didn't give him the right to do any of the awful things he did. Theseus agrees with Newt, and Albus says that he made excuses for Grindelwald out of sympathy, but that he shouldn't have. Cause Newt and Theseus are right; Grindelwald shouldn't have committed the monstrosities that he did. Leta sighs sadly but nods in understanding. The three men also comfort her about her past and tell her that Corvus's death was not her fault. All four of them sing the song "All I Ask of You" to each other, except that the song is changed so that the romantic elements are taken out and the song is about comfort and support from them, her family.

😭😭😭

We know for a fact neither brother would let the other die, at least not unless the other dies with him. No question about it.

When they were kids, Theseus accidentally hurt Newt with his magic when they were playing. He became really scared and got their parents, who had already felt uneasy about his powers. The three of them took the unconscious Newt to a witch healer, who then healed Newt but said that the side effect was that he wouldn't remember Theseus's powers. The parents thought that was fine and decided that they should all keep Theseus's abilities a secret from Newt. Theseus, out of fear of harming his brother again, decided to lock himself in his room and avoid Newt.

This made Newt confused and hurt. He kept trying to get Theseus to come out and play with him, but Theseus always refused. Eventually, Newt sadly accepted that this was how it was going to be.