Sonic 3 & Knuckles, Wiki

Sonic the Hedgehog (Underground) - Loathsome Characters Wiki

Knuckles Clan, Sonic Wiki Zone

Sonic The Hedgehog 3 & Knuckles (lost build of cancelled iOS port of Sega Genesis platformers; 2014) - The Lost Media Wiki

Knuckles the Echidna (Movie) - Sonic Wiki - Neoseeker

Knuckles the Echidna/Gallery - Sonic News Network, the Sonic Wiki

Sonic the Hedgehog (character) - Transformers Wiki

Flying Battery Zone (Act 1), Sonic the Hedgehog 3 & Knuckles Music, Mysikt Wiki

Sonic - Ultimate Tails Gets Trolled Wiki

The Blue Knuckles Glitch (The Gateway To Learn Dev, Wiki

Knuckles the Echidna - WikiFur, the furry encyclopedia

List of Sonic the Hedgehog characters - Wikiwand