Knuckles the Echidna (Canon, SEGA)/Earthyboy

Summary
Knuckles is an anthropomorphic echidna, the last of his tribe, sworn to protect the Master Emerald. A gem containing the ultimate power. When Dr. Ivo Robotnik, and mad scientist hellbent on taking over the world crash landed his Death Egg on Angel Island. Knuckles met Robotnik to which the Doctor tricked and convinced Knuckles his enemies Sonic, and Tails, were after the Master Emerald.