Shadow the Hedgehog, Villains Wiki

Shadow the Hedgehog is a major character in the Sonic the Hedgehog franchise. Although he is Sonic's arch-rival, Shadow is not truly villainous; as he is mostly considered an anti-hero mostly due to how he still maintains something of a friendly rivalry with Sonic and has done some questionable things but at the same time from how he has done things such as sacrificed himself to save others multiple times and ultimately sets out to do good for humanity and protect the world in the end. However

User blog:Dark-Carioca/Nazo, Villains Wiki

Shadow the Hedgehog, Heroes Wiki

Doctor Eggman - Wikipedia

Sonic Villains: The Eggman Empire / Characters - TV Tropes

Are Sonic and Shadow brothers? - Quora

Sonic - Ultimate Tails Gets Trolled Wiki

Knuckles the Dread, Heroes Wiki

Dr. Eggman (Classic), Villains Wiki, Fandom

Shadow the Hedgehog, Villains Wiki

Zeena, Villains Wiki

Black Doom, Villains Wiki, Fandom

Sonic Villains

Shadow the Hedgehog (Sonic Boom Universe), Sonic Villains Wiki

Shadow The Hedgehog 06 (Render) by Scottish-Penguin on DeviantArt