Knuckles the Echidna is a character that appears in the Sonic the Hedgehog film series produced by Paramount Pictures and its spin-offs. He is an anthropomorphic alien echidna warrior with the power of super strength and is the last of his kind; he is also well-known as a lonely traveler and treasure hunter. A proud and honorable warrior, Knuckles spent most of his life searching for Sonic the Hedgehog, believing him to be the key to finding the Master Emerald, which he saw as his ancestral birthright. To this end, he would ally himself with Dr. Robotnik. During their alliance however, he got betrayed by Robotnik, who took the Master Emerald for himself. Befriending Sonic afterward, he joined forces with him and Miles "Tails" Prower to defeat Robotnik. After this, Knuckles, Sonic, and Tails formed a new order together to protect the Master Emerald from evil.