What the heck is Darkspine Sonic?

I had a random thought about Darkspine Sonic and I wanted to dig a little deeper. Strangely enough, information on how this form was created is limited. No

Darkspine Sonic Render (aura alt) by Nibroc-Rock on DeviantArt

Darkspine Sonic by EnJayKay on Newgrounds

Darkspine Sonic HD Wallpapers and Backgrounds

Sonic Dash - Darkspine Sonic Gameplay Showcase (MAX Level)

Sonic Plush, 15 Hyper Sonic Plushie Toys for Fans Gift, Collectible Stuffed Figure Doll for Kids and Adults

Darkspine Sonic [Super Smash Bros. Brawl] [Mods]

Darkspine Sonic - Sonic and the Secret Rings - Zerochan Anime Image Board

Feliz Aniversário Sonic! Confira as várias transformações do ouriço nestes 26 anos! - Blog TecToy

Who would win, Dark Sonic or Darkspine Sonic? - Quora

Darkspine Sonic [Super Smash Bros. Brawl] [Mods]

Darkspine Sonic by Sweecrue on DeviantArt

Darkspine Sonic [Super Smash Bros. Brawl] [Mods]

Sonic Forces: Darkspine Sonic Wallpaper by NIKEBERKAY7700 on DeviantArt