A robotic doppelgänger of Knuckles the Echidna in the Sonic the Hedgehog series. Created by Dr. Eggman, he first appears as the boss of Angel Island in Sonic Advance. Initially, Mecha Knuckles resembles Knuckles but with magenta fur, blue eyes, and yellow gloves. Upon sustaining damage, his outer layer falls away to reveal a more mechanical form. He possesses abilities akin to Knuckles, such as gliding and the Spin Dash, and in his second form, he can launch homing missiles from his mouth.
