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

What the heck is Darkspine Sonic?

Gryz on X: darkspine sonic test / X

Darkspine sonic, Wiki

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

Sonic Dash - Darkspine Sonic Gameplay Showcase (MAX Level)

Darkspine Sonic

Darkspine Sonic, Ultimate Pop Culture Wiki

Darkspine Sonic by Trinima on Newgrounds

SMTVI INFERNO - Darkspine Sonic (Full) by InfiniteDXI on DeviantArt

Darkspine Sonic, Sonic Wiki Zone

Jillian's Fan Art: Darkspine Sonic

Tracy Yardley's artwork of Darkspine Sonic! : r/SonicTheHedgehog