Ponifiying the casts of TTGL, Fire Emblem Jugdral, Fire Emblem Elibe, and Fire Emblem Tellius.
Trying to make a custom MLP doll based off of a ponified Anti-Spiral Nia, using Celestia/Nightmare Moon/Gold Lily/Sterling as the base.
A redesign for Nyx’s (from Past Sins) Nightmare form. (No clear image came to mind as of yet, though.)
A Nightmare Rarity wallpaper based off of one of those “eyecatch” transition-to-commercial sequences from Tengen Toppa Gurren Lagann. (Specifically, one of those that you see in episode 18.)
A scene interpretation of the moment from “Princess Twilight Sparkle” where Luna becomes Nightmare Moon, with Luna looking more noticeably scared than in the show itself.
A humanized Nightmare Rarity cosplaying as Anti-Spiral Nia.
An AMV that syncs scenes from the post-timeskip events of Tengen Toppa Gurren Lagann to Endless Mist of Nightmares
. (But with the “EP” version of that song used instead.)
An interpretation of the scene from Past Sins where Nyx and Rarity first meet, with a flashback of sorts to the Nightmare Rarity arc from the IDW comics.
A picture of Nyx from Past Sins, as “Nightmare Nyx,” looking in a shattered mirror whilst in rage and sadness at the same time. With images of Nightmare Moon and Nightmare Rarity laughing at her from the mirror shards.
A picture of an older-looking Nyx from Past Sins (Probably based off of SilverArrow’s interpretation.) together with Sparity from Vavacung’s ‘Crazy Future.’
Some pictures that play around with the “name’s the same” trope with characters from MLP:FiM and FE14.
Nyx from Past Sins cosplaying as Corrin from Fire Emblem: Fates. With Nightmare Nyx as the “Nohrian Noble,” and the proper older version of Nyx as the “Hoshidan Noble.”
That’s basically all I can think of besides some Fire Emblem x Valkyria Chronicles fanart, as well as Nia Teppelin cosplaying as The Spy from TF2.