Knuckles the Echidna (Sonic X comics)

Knuckles the Echidna is an anthropomorphic, wild and tough echidna who appears in Sonic X (Archie comic). Personality-wise, he is stubborn and doesn't adapt easily. Once he and Sonic the Hedgehog were rivals, but their differences have been resolved. Despite this, he is often jealous of Sonic's free spirit. He is famous as a treasure hunter and a master of martial arts. Knuckles' primary ability is strength, his arms are so powerful that he can shatter rocks. Ever since the first Chaos Control incident, Knuckles has become dedicated to finding the Chaos Emeralds so he can go back to his job of guarding the Master Emerald.