Dullahan AU one shots!

How I Met My Body: Nightmare

After a long day of terrorizing the Multiverse, Nightmare went up to his room to relax. He stretched a little bit, including snapping his neck a little. But once he did that, he realized he can't feel his arms or body anymore.

"What the-?" 

He looked up and saw a purple flame on his neck, and a little white face, sleeping. The King was confused and tried to get this flame's attention.

"OI!"

The flame bolted awake and looked down at his head and screamed. The body threw the head on the floor and fell down, crawling away from it in fright. 

"WH-WHO ARE YOU!?!"

"Me? Who are you?"

"I... I'm Nightmare. Guardian of the Black Apples!"

This made the head confused, but realized something.

"No. No no no! YOU'RE SUPPOSED TO BE DEAD!!"

The body was confused. Dead? Dead how?

"What do you mean?"

The flame looked around the room.

"Where am I..? Where's the tree? Where's my brother? And, what do you mean 'Im supposed to be dead?'"

Nightmare seemed to have finally calmed down this guy.

"I'll tell you, but you won't like it. But first, tell me, what is the last thing you remember?"

The body looked dazed, and thought long and hard.

"Well, the villagers were coming to attack me and Mom, and they threw a spell my way, and Dream... Stood in front of it and... He turned to stone. So, in a panic, I ate the black apples, and... Then, I guess I took a little nap, cause now I'm talking to a head covered in writers Ink."

The body looked at its hands, and started to worry.

"Uh... I guess, I'm covered in it, too? Wait, how long have I been asleep?"

"500 years."

This made the body panic.

"500 YEARS!?!

The body finally stood up and looked in the mirror, and gassed at his new state. He was a headless body.

"Looks at me..."

Nightmare was still on the floor looking rather unfazed.

"Yes, yes, I know. I must be a-

"I'M OLD!"

This offended Nightmare.

"I beg your pardon?"

The body kept feeling his neck, trying to grasp his new age.

"AH! IM LIKE THE CRYPT KEEPER!!"

"Ok, that's enough!"

Suddenly they heard a knock on the door.

"Boss, are you ok? We heard screaming."

It was Dust. The body ran to the door and locked it.

"Yes, I'm fine, Dust. Just don't come in yet."

Dust left. The body and head were alone. The body say down next to the head and started to cry.

"So... Is Dream dead too?"

"No. He still alive and a nuisance!"

"He may be annoying, but I still love my brother. The classic duo of Dream and Nightmare, right?

"Listen, I know it might be hard for you to grasp, but... You can't be Nightmare anymore. That name belongs to me. The King of Negativity. Leader of the Bad Sanses. You... You're nothing but a memory now."

This made the body cry harder. Nightmare knew the one being his body was still a child at heart, so... what can you do to comfort a child?

"Hey, do you... Want to see your brother?"

The body nodded.

"You just have to put me on your neck, and I'll take care of the rest."

"Wait! Shouldn't I have a name first? Since I can't be Nightmare anymore."

Nightmare growled.

"Fine. What do you want your new name to be?"

"I was thinking... 'Twilight'?"

"But you don't sparkle."

The body tilted its head in confusion.

"I'll tell you later. Anyway, your brother?"

"Oh, right."

Twilight put Nightmare back on his neck and gave Nightmare complete control of his body again. He then teleported to where Dream was and knocked in the door of Blue's house, which was where Dream was at the time. Dream opened the door and looked nonchalant.

"I have to tell you something."

"You're the worst."

Dream then slammed the door. Nightmare looked unfazed, but went to a nearby bench that was out of sight, and took his head off, revealing Twilight  yet again.

"Wait, where's Dream?"

"In that house. He's stubborn."

That's when they heard a scream from the house.

"Was that Dream!?!"

Twilight ran to the house, leaving Nightmare on the bench.

"OI! Don't forget me!"

Twilight looked at Nightmare, and noticed a tentacle arch from his back. This frightened the young soul, but Nightmare reassured him.

"Hey! Hey! Hey. It's ok. It's a good tentacle. Just... Focus, and bring to towards me to pick me up."

Twilight obeyed and controlled the tentacle with ease.

"H-hey. I did it!"

"Good job. Now, to Dream?"

"Oh, yeah."

Nightmare didn't want to admit it, but, he liked having this part of him back. He also likes the tentacle ride. And now, he was going to see his brother again. But this time, with and as Twilight.