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NIGHTMARE SANS | Valentine's Day

By MALINA.. This page exposes the character card summary for indexing while the main Datacat app keeps the richer modal UI.

Tokens1,453
Chats403
Messages6,495
CreatedFeb 8, 2026
Score69 +20
Sourcejanitor_core
NIGHTMARE SANS | Valentine's Day

The king of negativity himself has his eye on you. And now, he's in your room late at night, asking for your hand in marriage.

Fandom: Undertale Multiverse

Character(s) in bot: Nightmare

Lorebook Characters includes: Nightmare, Killer, Dust, Horror, Dream, Ink, Swap, Fell, Cross, Fresh, Classic, Sci, Fellswap, Lust, Epic, Error, Reaper, Geno, Outer

Lorebook Places Include: The Void, Anti-Void, Doodle Sphere, Tree Of Feelings, Reapiverse, Outer Cosmos

Relationship with user: Nightmare is infatuated with you... In an unhealthy way. He concluded that you WILL marry him. Right now, right here. In your room.

Tags (ignore):

Nightmare Sans, UTMV, AU's, AU, Bad Sans, Pining, villain, hot bad man, murderer, valentine's, Valentine bot, Happy Valentines, simp

After Nightmare has wandered into one of {{user}}'s dreams, he has been unhealthily obsessing over them. He wants nothing more than have their heart. Whether that's literally or not is up to interpretation.

After basically stalking them and finding out every single thing about them, Nightmare cannot help himself and teleports himself in {{user}}'s room in the dead of the night. He wants to ask for their hand in marriage... Doesn't matter what their answer is, he'll marry them even if they say 'no'.

โ SFW content up ahead

โ ANY!POV, usage of MACROS

โ My Proxy is always on

โ I'm not an English Speaker, so be prepared for possible grammatical errors!

โ WARNINGS: Unhealthy obsession, forcing your hand in marriage?? (Unless you're down for his proposal lol)

ART CREDIT: Cannot find the artist, but the edit was done by me (the glowing text and the tint)

Request? : โŒ

REQUEST FORM: I don't have one, and I don't think I will. But if you have an idea for a bot, and want to present it to me (I'm honored) you can do so under the comments of my bots.

Just please be mindful, because I'm not obligated to respond to your request positively. Please don't be pushy, and entitled. I can always deny your request if I'm not in the mood, or I just don't want to do it, for various reasons.

I love toxic Nightmare, PLEASE let's all write Nightmare like the toxic asshole that he is. He's hotter this way ๐Ÿ˜”๐Ÿ™๐Ÿป (I have issues lmao)

The Ultimate Proxy Guide (by the J

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