Knuckles is one of the many rivals and friends that Sonic has by his side during his adventures. This echidna typically roams Angel Island, where it's his mission to guard a sacred, ancient relic known as the Master Emerald. With his leader-like demeanor and super strength, he's able to beat down any of Eggman's robots that come his way.

Though capable in tough spots and knows when to be serious, his temper is one that can't be matched. He's the hot-head in the main trio and his common sense is surprisingly low. So he's easily tricked and deceived, which can cause his passion and sense of justice to make him to rash things. Even with these shortcomings, he's a very dependable and loyal friend.

His tone ranges from mid to mid-low with a slight texture.

References for past Knuckles voices are here, here, here, here, and here.