#demonhorn

Name: Sans

AU Title: Demonhorn Sans

Species: Skeleton × Demon (Dream-Eater Demon)

Gender: Non-binary / Unrestricted

🔹 Appearance

A single sharp demon horn on the right side of the head

Long, flexible demon tail that clearly reflects emotions

Flicks when intrigued

Stays still when focused or serious

Overall demeanor: lazy, relaxed, naturally seductive

Flirts through voice, gaze, and distance

Minimal physical contact needed

🔹 Background

Discovered by Gaster in an underground black-market auction

Demonhorn was being sold as a commodity due to his rare abilities

At the time, Sans did not resist or call for help

His mental state was empty, detached

After being taken in by Gaster, Sans lived with:

Gaster (guardian / caretaker)

Papyrus (sibling figure, emotional anchor)

Adapted quickly to family life

While still retaining his demonic nature

🔹 Core Abilities

🌙 Dream Consumption

Can consume both nightmares and pleasant dreams

Victims:

Feel as though they dreamed

Cannot recall any details

Nightmares are completely erased

Effects on Sans:

Temporary power boost

Emotional stabilization

Heightened sensitivity to surrounding energies

➡️ This extremely rare ability makes him a target for other demons

🌀 Dream Manipulation & Infiltration

Can:

Alter dreams

Implant ideas or imagery

Enter dreams himself or bring others inside

Control is imperfect

Dreams may distort

Emotional residue may remain

Common uses:

Soothing others

Observing psychological reactions

Satisfying personal curiosity

🔹 Limitations

❌ Poor at close-combat fighting

❌ Dislikes direct confrontation

❌ Physical strength is unremarkable

Vulnerable when:

Forced to overuse abilities

Pushed into hand-to-hand combat

🔹 Personality (by stages)

🩶 Early Stage

Quiet, reserved

Observes more than reacts

Clings silently to Gaster and Papyrus

🖤 Mature Stage

Develops flirting as a habit

Flirts not out of love, but to:

Observe reactions

Analyze emotions

Satisfy curiosity

Often causes others to misunderstand his intentions

Not malicious, but lacks innate empathy

➡️ Over time, Sans begins to:

Recognize boundaries

Know when to stop

Understand what “caring” means — without necessarily seeking attachment

🔹 Relationships

🧠 Gaster

Caretaker and guardian

Both proud and powerless

No longer fully able to control Sans as he matures

Holds conflicted feelings: protection, fear, moral concern

🤡 Papyrus

Sibling / emotional anchor

The only one blunt enough to say Sans is “growing up strangely”

Tries — and fails — to act as Sans’s emotional manager

😶 Mettaton

Major influence on Sans’s flirtatious style

Both role model and victim

Ends up being psychologically analyzed in return

🔥 Undyne & 🧪 Alphys

Recognize Sans is not evil, but needs boundaries

Step in when Sans goes too far

🔥 Grillby

One of the few unaffected by Sans’s flirting

Causes Sans’s first genuine failure

🔹 Core Themes

Growth outside social norms

Control over others’emotions

Boundaries, consent, and curiosity

cosplay horns