Sonic Prime: Gnarly Knuckles[1] Knuckles the Dread[1] Knuckles the Echidna[1] Renegade Knucks[1] Sonic the Hedgehogseries: Knuckles the Echidna Sinbad the Sailor Sir Gawain Sonic X: Knuckles the Echidna TailsTube: Knuckles the Echidna