Knuckles

Knuckles the Echidna is the guardian of the Master Emerald in the Sonic the Hedgehog series. He protects Angel Island and sometimes joins Sonic against Eggman and larger threats, despite being easily manipulated in early stories.

Knuckles' place in Sonic the Hedgehog

Knuckles is serious, proud, independent, and socially inexperienced, but his loyalty to his duty is absolute. His immense strength allows him to break rock, climb walls, glide through the air, dig, and fight at close range.

Knuckles's powers, allies, and character growth

His rivalry with Sonic grows into dependable friendship, while his isolation as the last known echidna shapes his guarded personality. Adventures beyond Angel Island teach him to trust allies without abandoning his responsibility.