Are you sure he's an Echidna? He might be a hedgehog, and if he is, he's called silver.
His name's Knuckles he is guardian of the master emerald he's also Sonic's friendly rival/teammate.
amy rose is an echidna.
Sonic likes Shade as a friend.
Knuckles the Echidna
He is a red echidna.
An echidna
Knuckles is the red Echidna in sonic x
knuckles love 3 girl call rouge the bat from sonic x, Sonia the hedgehog from sonic underground and julie-sue the echidna from sonic comic but he did not like shade the echidna and tikal the echidna
Knuckles is a short beaked echidna and not as fast as the other sonic characters but has strength.He is an echidna because of his nose, porcupines don't have as narrow snouts as echidna's do.
Sonic 3.
She a Echidna.
He may look like Silver, but Aeon is the name of the white sonic character from ffsx5.