Knuckles the Echidna

Knuckles the Echidna (Japanese: ナックルズ・ザ・エキドゥナ Nakkurusu za Ekiduna) is the last one of his kind, he guards the Master Emerald on Angel Island.

Character Description
Knuckles is a heroic and powerful echidna who lives on Angel Island, an island in the sky. He is destined to guard the Master Emerald at the Altar of the Emeralds, forever. He is Sonic’s rival and also a friend who can be stubborn and serious. His belief in the goodness of others sometimes makes him gullible. Knuckles is honest, loyal to his duty, independent, and headstrong. Despite being a silent loner, and the fact he prefers that too, he is also kind-hearted. Due to his nature, he very often chooses force to be the solution to his problems.

Theme Song
Unknown from M.E. (Theme of Knuckles the Echidna in Sonic Adventure 2)

Skills
Knuckles is one of the few characters that glide.