File:Wintergames shadow.png - Sonic Retro

Due to the lack of a proper timeline in the Sonic Encyclo-Speed-ia, I decided to make my own. Second image contains my notes, reasonings, and conjectures. : r/SonicTheHedgehog

Artwork of Shadow the Hedgehog, Sonic Art Assets DVD Wiki

Shadow the Hedgehog - The Cutting Room Floor

Sonic and the Black Knight - Sonic Spin-offs - Sonic Stadium

File:Shadowth vector.png - Sonic Retro

Shadow the Hedgehog, Neo Encyclopedia Wiki

Shadow the Hedgehog - The Cutting Room Floor

Sonic and the Secret Rings - Sonic Spin-offs - Sonic Stadium

Sasrt Eggman Free Images at - vector clip art online, royalty free & public domain

Shadow the Hedgehog (game), Sonic Wiki Zone

File:London2012 Shadow.png - Sonic Retro

Sonic Team - Sega Retro

Sonic the Hedgehog - Wikipedia

Sonic the Hedgehog CD (Sega CD) - The Cutting Room Floor