Knuckles is a red robot modeled after Knuckles, but with extra height added to it. It has a flat, dome-shaped head with two blank and green eyes, orange-tipped stubby flaps resembling Knuckles' dreadlocks, and a thin gray muzzle. Possessing no neck, it has a wide torso shaped like an arch with thrusters on its back, a wide pelvis, and a thin gray intake across its chest. It also has thick gray and red arms, three-fingered orange hands with solid gray fingers, thick red legs with orange rims, and red and gray feet fashioned in the image of Knuckles' shoes.
In gameplay, Knuckles-bot is a playable character for the Bot Racing minigames in the main levels (after they are cleared by Sonic) and on Thunder Island. This Bot Racer can be unlocked for 400 Ragnium shards in the Bot Racer Workshop.
Powers and abilities
With the aid of its Ragnium-based fuel, Knuckles-bot commands super speed, enhanced jumping skills and agility for special moves, and the ability to activate Fire Mode and Ice Mode on its own. It also comes equipped with its own Enerbeam.