Felldust

For other versions of Underfell, see Underfell (disambiguation).

Uncredited

**FellDust** is an AU merging Dusttale and Underfell. This version takes the original concept of FellDust and attempts to make it more unique, as to avoid having more Dusttale remixes that add nothing to the story aside from a theme shift. The difference between Dusttale and Felldust is that, unlike in the community's perception of Felldust/Dustfell, Frisk is the one forced to recreate a genocide route in order to stop Sans. It functions as a dynamic change within a custom take of Underfell.

It is ultimately a complete dynamic shift of the original Dusttale, by Evan Streblow and Osteophile. Some of Underfell's canonical components shine in this AU, as well, as it takes much inspiration from Underfella's work, but it is designed to be original from both AUs through different character interactions.

This is NOT a ship AU, but there is a component of love within the lead characters. Frisk is depicted as 18+ in this AU.

Similarly to how Dusttale's Sans remembered the countless genocide routes performed by the human, FellDust's Sans remembered the pacifist routes performed by his. This forced the skeleton into a state of partial shock, followed by homicidal tendencies toward any monster that tried to harm the human. After numerous RESETs, Sans began executing monsters in the underground, much to Frisk's disliking. Over time, Frisk was forced to kill monsters to stop Sans from doing the same, ending in Sans finding a method of permanently executing Frisk, which leaves him in an empty underground with the pain of knowing he killed the only person that still meant anything to him.

## Characters

### Undertale Characters

#### Sans

*The information provided on Sans in this AU is limited to this specific take on Felldust. Any information that doesn't align with anything shown in this article may very well be a different take.*

This take of Underfell's Sans involves a more bitter and irritable take of his personality. Sans typically tells jokes with dark humor or jokes solely to insult or hurt the people listening. He rarely ever sleeps, and hardly ever talks to Frisk unless necessary. He's generally less sociable, but when he does speak, it's usually with a more firm tone, and he takes matters much more seriously.

After remembering the pacifist routes, Sans becomes violent and aggressive toward monsters, as well as more defensive of Frisk. His mental state gradually deteriorates after usage of the DT injections, as they impact his perception and physical condition permanently. Sans experiences forms of hallucinations and frequent panic attacks, as well as random outbursts that destroy the calm and composed demeanor previously known to him.

Plagued with the irritation of being belittled and taken for granted at every turn for his weakness, Sans develops into a megalomaniac over time. Once he remembers the human's countless pacifist routes, he's provided an actual reason to take action: preventing Frisk from getting hurt. This justification enabled Sans to inject DT into himself in monitorable levels. The penalty for taking these injections was hallucinations, unstable form (similar to amalgams'), and occasional magic failure.

Thanks to the DT injections, he received bonus perks such as the ability to keep memories after RESETs, as well as LV, abilities, and sometimes, disable certain SAVE points.

Shell Blasters are a special ability gained by FellDust Sans later into a genocide route. Using MEMORYHEADS in combination with ordinary blasters, an infected form of them called Shell Blasters were created. These blasters are unable to actually fire beams of energy, instead relying on discharge of sound and replaying memories toward their target. The Shell Blasters cannot be destroyed via RESETs.

#### Papyrus

Brother of Sans, obviously. He is the main inspiration for Sans' decision to end monsterkind. In this take of the AU, Papyrus frequently underestimated and belittled Sans in order to inspire him to try harder, which he never did. The constant insulting and failure of Papyrus' expectations drove Sans' first reason to go through with his plan: to prove his brother wrong. This wouldn't immediately get Sans to kill him, however, which is why the second reason was Papyrus' poor judgement that led him to kill Frisk, enraging his older brother. Seeing how many monsters were completely fine with ending the life of the human he believed was angelic broke the barrier in Sans' mind that stopped him from choosing violence.

#### Frisk

Maintains the kind and caring personality seen by most renditions of Underfell Frisk, however this version is older. Frisk in this AU is female, and is over 18. She is allies with Flowey and actively tries to discourage Sans from killing. She actively avoided causing monsters harm, and attempted to save any that she could.

After Sans' repeated genocide routes, she was forced to become more aggressive and defensive in order to survive.

Frisk grew up in Ebott city, facing poverty and unfair treatment by practically everyone there. One day, she chose to run off toward Mt. Ebott, and unsurprisingly to every AU here, fell in.

## Story

* Written
* Soundtrack

* Chapter 1
* Chapter 2
* Chapter 3

* Once Upon A Time
* Walk (Intro)
* Order (Battle)
* it's me. (Sans)
* No Regrets (Megalovania)

## Gallery

Created by KimchiConcept art for Shell Blasters - Created by Temmie Chang, modified by Bread-deal
## Trivia

* Papyrus does *not* have a phantom form, and never shows up alongside Sans in battle. Reason being that Sans' hallucinations appear only to himself, and are not manifested in any form of magic; also, Papyrus doesn't turn into a ghost.
* Sans doesn't have five million HP in this AU. He's still 1 hit from death, but his HP does extend slightly past its base with the LV he gains.
* The name for this version of Sans varies, though in rough terminology, he can be referred to as "shell," due to his usage of the Shell Blasters. Furthermore, being a "shell" can mean that a person is emotionally hollow and/or is damaged inside. This one is heavily up for debate, of course.
* Sans is able to remember RESETs, but only in vivid detail, through the usage of his DT injections. This was after he remembered all pacifist routes taken by Frisk in a random dream.
* Sans does not wear his hood up, typically, due to him not feeling the need to hide himself away. The genocide routes performed by him were out of his desire to be recognized and feared, ergo hiding wouldn't make sense with his motives.