Nyx, in her undisguised form
|Created by||Pen Stroke|
|First appearance||Creeping Darkness|
Past Sins (most common portrayal)
|Eyes||Moderate opal to Dark opal|
|Mane||Dark blue violet|
|Coat||Very dark cornflower blue|
|Relatives||Twilight Sparkle (adoptive mother)|
Nightmare Moon (past life)
|Eye whites||Light opal (undisguised)|
|Vest||Moderate blue violet|
| Cutie mark|
None (at first)
|Voice||Meredith Sims (Cartoon Bronies adaptation of Past Sins)|
Nyx in Past SinsEdit
Nyx is best-known for her central role in Past Sins. She is created by an unfinished ritual intended to restore Nightmare Moon's power and give her a body of her own. When Twilight Sparkle discovers her, she remembers nothing from longer than two hours earlier, but possesses an understanding of the Equestrian language and pony behavior.
Twilight takes the filly in to determine if she is actually Nightmare Moon, but soon comes to care for Nyx like a daughter. Possibly as a result of Twilight's blood being used in the ritual, Nyx has a nearly insatiable appetite for learning and loves to read as much as her adopted mother does.
She is also extremely sensitive and prone to crying fits when she thinks she has done anything to disappoint Twilight. During the story, she is called a "crybaby" numerous times. Her love of learning makes her unpopular with the colts and fillies in her class, but she manages to befriend the Cutie Mark Crusaders and Twist.
As an alicorn, Nyx possesses incredible magical ability - best demonstrated by her ability to turn Fluttershy into a tree with relative ease. However, in Nightmare or Nyx?, her magical power is significantly weakened, due to Luna taking back the bulk of her power (it originally being hers, as Nightmare Moon) at the end of Past Sins.
She wears a vest to hide her wings and a pair of enchanted glasses to disguise her eyes, which naturally resemble those of Nightmare Moon.
Nyx's reception within the fandom has been mixed, but notably with more nuance and positivity than that of alicorn OCs in general. Fans of Past Sins adore Nyx and find her to be cute and likable, whereas the story's detractors call her a Mary Sue and criticize the perceived derailing effect she has on Twilight's personality throughout Past Sins.
- Creeping Darkness, by Pen Stroke and Batty Gloom
- Past Sins, by Pen Stroke and Batty Gloom
- Nightmare or Nyx? by Pen Stroke
- Trinkets by Pen Stroke
- Winter Bells by Pen Stroke
- Fandom Crisis! by Mr Boltitude
- Nightmare Night and Nyx by RealityCheck
- Curse of the Demon Pony by JusSonic
- Ben's First Day by JusSonic
- Happy Birthday, Nyx by JusSonic
- The Return of an Old Friend by JusSonic
- Black Pony of the Family by JusSonic
- Lorcan's Wrath by JusSonic
- Big Brother Responsibility by JusSonic (cameo)
- Tirek Reborn by JusSonic
- A Dragon's Tears by JusSonic (cameo)
- The Spirits of Hearth's Warming by JusSonic
Additionally, a short story sequel to Past Sins will be featured in the printed edition of the book, and remain exclusive to it for about two months.