Dark Sonic (Sonic X) Palette - Pixilart

Dark Samus Pixel Art by XtremePainOne on DeviantArt

Pixilart - Dark Sonic by Sonic-Gamer

DarkSonic - Pixilart

Pixilart - dark classic sonic by sonicfan2009

Sonic Fixed Palette Pixel Arts by ZhaoIzuniy9786 on DeviantArt

Editing Dark Super Sonic 2.0 - Free online pixel art drawing tool - Pixilart

DarkSonic - Pixilart

Editing Dark Sonic - Free online pixel art drawing tool - Pixilart

MerryCDi on X: Fun Fact: Earlier palette data shows that the green used in Sonic's palette used to be pitch black a color that is the same as it's transparent color, here