Metal Knuckles

Metal Knuckles is a robotic double of Knuckles built by Dr. Eggman. He is Metal Sonic's "brother" due to the fact they were made by the same person. His appearance was in Sonic R.



Sonic R
In Sonic R, Metal Knuckles makes his first appearance. Here he was created to complete with Knuckles the Echidna and his abilities are very similar to that of Knuckles.

Archie
In the Archie Comics, Metal Knuckles appears as a member of the Metal Series.