Sonic The Hedgehog's Biggest Differences From Shadow, His Sinister Twin

Sega's Sonic the Hedgehog is one of the gaming industry's biggest triumphs, yet his dark rival, Shadow the Hedgehog, is full of surprises!

Sonic and the Black Knight (Video Game) - TV Tropes

The Best Sonic Characters In The Series

Who or what is Shadow the Hedgehog? Dr. Eggman discovers the secret lab of Professor Gerald, his grandfather. By freeing the sleeping Shadow creature,

Sonic X - Project Shadow v.8 [DVD]

Sonic Evil Twins by Maxicranky on Newgrounds

Who wins? : r/SonicTheHedgehog

How strong is Shadow the Hedgehog compared to other characters from the Sonic the Hedgehog universe (not counting Super/Hyper forms)? - Quora

I've been thinking recently about the concept of an Evil Sonic because of Prime's whole Multiverse stuff, what do you think could be an interesting way to tackle that concept? I put

Shadow the Hedgehog (Game Character), Character Level Wiki

Shadow The Hedgehog Endings Alignment Chart (explained in comments) : r/SonicTheHedgehog

Sonic Generations (Greatest Hits) - PlayStation 3 : Sega of America Inc: Video Games

Doctor Robotnik/Eggman throughout the ages. by Luke-the-F0x on DeviantArt