DarkSpine Sonic 3 by Phantom644 on DeviantArt

True Hyper Forms [Sonic 3 A.I.R.] [Works In Progress]

Custom / Edited - Sonic the Hedgehog Customs - Sonic 3 Beta Swinging Animation 1 (Sonic 3-Style) - The Spriters Resource

Custom / Edited - Sonic the Hedgehog Customs - The Spriters Resource

Comics with Darkspine Sonic - Comic Studio

Darkspine Sonic sprites by kaijinthehedgehog on DeviantArt

RedDoom

Silver Sprite Sheet :UPDATED: by LucarioShirona on DeviantArt

Hyper sonic sprites by unknown : r/SonicTheHedgehog

Art/Meme Book - Metallix Unit - Wattpad

Free download HD PNG mecha sonic sprites PNG transparent with