Some strange Sonic CD sprites Mega Drive Developers Collective

I've wondered about this for months at this point and never came to a clear conclusion about these sprites. I'm specifically talking about the angled

Sonic the Hedgehog CD/Hidden content - Sonic Retro

The Spriters Resource - Full Sheet View - Sonic the Hedgehog CD

Sonic CD bosses by SonicDash57 on DeviantArt

Some strange Sonic CD sprites Mega Drive Developers Collective

We're arguably going towards the best years for the Sonic

Genesis / 32X / SCD - Sonic the Hedgehog CD (Sega CD) - Sonic

Sonic The Hedgehog [MD/G - Beta / Concept] - Unseen64

Sonic CD Sprite Sheets – Sega Genesis - Sonic Galaxy.net

Sonic CD Sprite Sheets – Sega Genesis - Sonic Galaxy.net

The Rarest and Most Valuable Sega Genesis / Megadrive Games

Retro Gamer Randomness: 2022