Super/Hyper Knuckles/Tails Discussion. - Chao Island

Sonic The Hedgehog - A Little Ball of Energy in an Extremely Handsome Package

Team Sonic - Sonic Retro

How powerful is Hyper Sonic, and is he complex multiversal? - Quora

Sonic Frontiers: Sonic's back, baby!!!, by Bobby Schroeder

Miles Tails Prower - WikiFur, the furry encyclopedia

Thoughts on Super Forms? : r/SonicTheHedgehog

Character Discussion: Tails - Chao Island

The Knuckles short made me ask the question on why don't we have a Chao Garden for mobile? A missed opportunity here Sega : r/SonicTheHedgehog

How would Canon Sonic and his friends react to secret history Sonic and Tails? - Quora

If only male Hedgehogs can go super, why can robots do it to? : r/SonicTheHedgehog