Hacks - SHADOW In Sonic 1 (Original Levels) TRaiNoR

Shadow in Sonic the hedgehog (TRaiNoR) ✪ Sonic Hack Playthrough

Hacks - SHADOW In Sonic 1 (Original Levels) TRaiNoR

Sonic Hacks ✪ (Another) Shadow in Sonic 1

Shadow, SEGA Heroes Wiki

Genesis Games online Page 28

Sonic The Hedgehog 2 Review

Sonic the Hedgehog (2006), Sonic '06

I know people take issue with IDW Shadow, but the comics really do right by so many characters (some spoilers for the comics included) : r/SonicTheHedgehog

Shadow, SEGA Heroes Wiki

Shadow in Sonic 1 (Sonic Hack)

Another) Shadow in Sonic 1 Sonic and Sega Retro Forums

Sonic the Hedgehog/History and appearances (IDW), Sonic Wiki Zone

Pokemon Rayless Ruby & Shadow Sapphire [Beta 0.1.0 Coming Soon!]

Shadow the Hedgehog in Sonic the Hedgehog - Sega Genesis Hack

List of Sonic the Hedgehog characters - Wikipedia