Super/Hyper Knuckles/Tails Discussion. - Chao Island

Shadow vs Knuckles

THE EGG TOPIC! (Sonic Fanfic Ideas, Discussion and Recs), Page 371

Knuckles the Echidna, Archie Sonic Online Wiki

REUPLOAD: Why does Sega refuse to bring back the Hyper forms and super emeralds? There's so much untapped potential in there! (Art by Rita James) : r/SonicTheHedgehog

Team Sonic - Sonic Retro

List of Sonic the Hedgehog characters - Wikipedia

Does Knuckles protect the Chaos Emeralds?

Character Chao - Chao Island

Is there anything you'd change about the 2nd movie? : r/SonicTheMovie

Legends Limited Super Tails and Hyper Knuckles by ChaseTales on DeviantArt

Knuckles the Echidna - Wikipedia

Sonic X (Anime) - TV Tropes

Golden Super Tails & Knuckles ~ Sonic 3 A.I.R. mods ~ Gameplay

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