Knuckles the Echidna Sonic the Hedgehog… you are no match for me. Knuckles the Echidna Porcupine? I am an echidna. Trained since birth in all forms of lethal combat, destined to restore honor to my tribe, and willing to destroy anything that gets in my way. [Stone: Welcome to the team.] Knuckles the Echidna You are unskilled, untrained, and unworthy! [Sonic: You forgot one: Unstoppable.]