Knuckles the Echidna

Knuckles the Echidna (or just Knuckles) is a friend and rival of Sonic the Hedgehog, as well as a past enemy. Knuckles is often portrayed as a loner. Knuckles can also become Super Knuckles with the power of the Chaos Emeralds. Knuckles lives and was born on Angel Island, which hovers in the sky due to the power of the Master Emerald. His duty is to guard the Master Emerald, and he is the last surviving member of the Echidna people who once inhabited the island.of the Master Emerald.