Sonic 2's GUN Organization Sets Up Shadow's Tragic Backstory

Sonic 2 introduces exciting things from the games, such as Shadow and the GUN organization - elements that will be used to tell a tragic backstory.

Shadow the Hedgehog, MalikTH's Canon/Fanon Wiki

Unpopular opinion: I don't mind Shadow using guns(or other weapons

Shadow the Hedgehog (Video Game) - TV Tropes

Sonic 2 & 3 Are Too Early For Those Shadow Theories To Come True

Sonic X / Awesome - TV Tropes

Guardian Units of Nations, Sonic Wiki Zone

Shadow the Hedgehog, Sonic Wiki Zone

But you're still standing here — G.U.N. Fortress, and how you

Is Shadow the Hedgehog affected by the white space in Sonic

Tragedy of Shadow - Sonic The Hedgehog