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Demon’s Nightmare

Summary:

I come across this picture of Luna/Nightmare Moon walking past Celestia after she had just been banished and Celestia’s all: that was fast. And Luna goes: moon is haunted. And Celestia goes: excuse me. And Luna walks by with weaponry and repeats herself. And we know Doom Slayer has Vega who can make portals to other dimensions. So. This crack fic was born

Notes:

https://suno.com/s/md6I0xF6vM5pPFwt

I made AI make music for Nightmare Moon in the style of Doom. Do enjoy the music while you read!

(See the end of the work for more notes.)

Work Text:

1000 years ago


Celestia couldn’t believe she could sleep after the events of this past night/day cycle. First her beloved sister turns evil and to defend herself when her life seemed in danger, she’d had no choice but to use the Elements of Harmony in order to banish her. She sorely hopes that in the thousand years the stars will help Luna…Nightmare Moon now escape from her prison. In her shock she finds herself in her sister’s realm of dreams. Not something she thought about, who would defend the pony’s dreams without the Princess of the Night to protect them, which is only now occurring to her when she spots her sister. Luna. Not at all in her Nightmare Moon visage. Her mane a galaxy of shifting stars and walking in the dream of the castle. “Doth mine own eyes dissemble me, 'r is yond thee, mine own sist'r?” (Do my eyes deceive me, or is that you, my sister?) Celestia asked perplexed. “Why have you come back here? You’re banished aren’t you for a thousand years!”

“That is true yes, but I require some weaponry. And getting it in your dreams fair sister is the only way I can. For you see, the moon it is haunted.” Luna replied stepping around her.

“I beg your pardon?”

“Your ears must be clogged. The moon. She be haunted. And I will not abide my prison to be besmirched by the cretins. Do take care that not too many ponies suffer nightmares in mine absence.” Luna remarked floating all kinds of weapons out of the dream.

 

He wasn’t too sure why he was there. Only that he got an alert of possible demons in a different realm, and had opened up the portal to where it was he had to be. He knew he was different almost immediately. He had noticed briefly that he was on all fours. Out of instinct he jumps out of the way and also on instinct somehow levitated and shot his super shotgun at the demon, sort of phased at his transformation, but with his thousands of years killing these monsters, instinct just took over.

“Who is't art thee? Thee doth not seemeth to beest an 'rdinary stallion.” (Who are you? You do not seem to be an ordinary stallion) He heard asked to him and looked up to see a tall unicorn Pegasus mix, her eyes and wings bat formed. But as she too seemed to be surrounded by demon corpses she wasn’t an enemy. Yet. Plus she didn’t feel demonic to him. Sad, lonely, and doing her best to survive a demon infested moon. That he could relate to.

“Nay, nev'r mind mine own questioneth.  Thee needeth to learneth how most wondrous to useth thy charm if 't be true thou art to beest of useth to me on this goodyear did infest moon.” (No, never mind my question. You need to learn how best to use your magic if you are to be of use to me on this demon infested moon.) Why was she speaking in such archaic language.
Sorry, Sir I was doing by best to figure out where we landed much less what she was speaking. Translating now. Vega stated aloud. While he got information due to the whatever she is, sharing it with him magically.

“What in the world is that voice? No. Never mind. Can you help me defeat these demons?”

Absolutely.” He growled the affirmative and he fought side by side giving her weapons that he didn’t use to defeat the demons.

 

1000 years later


Nightmare Moon never did get a name out of the stallion who fought by her side for near a thousand years. But when the demons saw him they screamed out something about a slayer. And with his flame like mane and the music that just emanated from him, she decided to call him Ash Vanguard. It seemed to suit the male just fine when she had suggested the title to him. He’d only shrugged. He wasn’t much for talking, but that was fine. It was a whole lot better than facing this horde of demons alone. She knew the stars would help her escape soon.

“If I need your help with demons again, might I call upon you?” She asks the male who nods once. A soldier’s promise to return if the threat pops up again. Vega the…what was an AI? Never mind, gave her a spell that would tell him and the Slayer that she needed help after she had given the Stallion knowledge about how to use his particular magic. He even gifted her with the music to call her own. ‘Demon’s Nightmare’ a little on the muzzle but she delighted in it.

“Live well, Your Majesty.” The longest thing he’s said to her. She still had no idea how he was as immortal as she, not being an alicorn, but she wasn’t about to look a manticore in the mouth for companions. She would have been alone these last thousand years if not for the fact that the moon had been haunted, and this stranger came to help.

Notes:

https://chatgpt.com/backend-api/estuary/content?id=d0f119c68b5dfab%23file_0000000085a8722fa21798108857fac5%23md&ts=491473&p=fs&cid=1&sig=d020616a0549aa705ecbccc72d4ce98a753c3e04fab867e6181284f7ab51ce9b&v=0

Use this to see ChatGPT to see Doom Slayer as a Unicorn