Eris Mercury

> " This is MY happy ending, now. "
>
> Eris Mercury, obtaining OVERWRITE for the first time.

" Observer "

John - Friend (Formerly)

## Backstory

Eris Mercury was once a normal Boss Monster that was affiliated with the Royal Scientists, and closely aligned with W. D. Gaster. She was his Assistant Researcher, and in the process of working with him, she gained knowledge about the timelines. One fateful day, Eris was sent to the Ruins to watch for fallen Humans while every Monster was summoned to the Barrier. Gaster utilized his very own GBLASTER Prototype to shatter the barrier, using the help of the Six SOULs and every monster's Love and Compassion-filled SOULs. They were all absorbed into the GBLASTER as it was cast away into the void, leaving both the Monsters and the Humans to rot for eternity while Eris, Gaster, and the other few outliers leave the Underground for good.

### Rise to Creativity, Beholding Newfound Power

Eris had entered an ENCOUNTER with a mysterious being named John. He had sent her to the Doodlesphere, which was a location between the Universes. John had given her a vial of Determination, and a goal to obtain the OVERWRITE for the sake of Creating, which had all been apart of John's veiled plan. He cast her into the Test Timeline to begin her learning of how to Create.

### Conquering Creation, to Ascend

Eris had learned much about the Creative Process, and began to further improve upon what she could create and utilize. In this time, Eris had isolated herself within a single portion of the Test Timeline, the LAB. All time spent here was used to isolate the location of the OVERWRITE, and to watch over the Vessels' progress. Eventually, John had come to an ultimatum of sorts with KingMultiverse!Sans, allowing him to obtain a vial of HATE, DT and OVERWRITE. John had given it to Eris as a 'Gift', which truly began her saga of creation and destruction.

### Disappearance

Eris had left the Vessels, John, and KM!Sans. She had decided to finally pursue OVERWRITE to it's fullest extent. Eris departed for XTALE to find XGASTER for the first, and the last time.

## Personality

Eris Mercury is a very sarcastic, analytical, and provincial-minded individual, who refuses to change their motivations. She seems to have a great deal of fun with creating things, but despises those who stand in the way of progress.

## Physical Appearance

Eris is a tall Goat Monster with very similar features to Toriel and Asgore Dreemurr despite being unrelated to them biologically. She always wears a black turtleneck sweater, slacks, and her usual large and round prescription glasses. There are many chains that wrap around her arms, neck, chest and legs. Despite her many bindings, she has a mysteriously high level of agility.

## Motives

To find and create her true HAPPY ENDING.

## Abilities

**OVERWRITE** - She utilizes her unfinished ability to alter the very code of the Universe, bringing forth many different changes and weapons.

**SHATTER BUSTER** - A type of CHAOS BUSTER that creates "Shifting Realities," which can corrupt or obtain code from another being for use.

**Flame Configuration** - Her entire control of Fire MAGIC.

**SHATTER SABERS** - A type of CHAOS SABER that can tear open rifts in the Timelines.

**Ethereal Chains** - A form of OVERWRITE that binds the opponent.

## Forms

**Perfect!John** - The fusion of John and Eris. Despite the naming, Eris usually has full control of this form.

**OVERWRITTEN** - In the attempt of fully utilizing OVERWRITE, she is Overwritten by XGASTER, and is rendered completely controlled by him, or whatever force that obtains this power.