Metal Robotnik is a manually controlled robot made by Dr. Robotnik of Planet Freedom to help in the capture of Princess Sara, but interference arrived in the form of Sonic the Hedgehog, Miles "Tails" Prower and Knuckles the Echidna after he captured the princess. After Metal Robotnik used its laser eyes to attack Sonic and Tails, Knuckles flew in to their rescue, but somehow, duplicates of Metal Robotnik appeared to challenge them. (StH: #101)
- This Metal Robotnik was based on Metal Robotnik from Sonic the Hedgehog: The Movie that was thought to be a sentient robot made by Dr. Robotnik in this zone's version of Robotropolis, but in reality it was Dr. Robotnik who was secretly controlling Metal Robotnik from within it.
- The changes between this Metal Robotnik and the one from the film is that it has colouring differences, such as being entirely blue instead of red and grey, and has a short yellow cape instead of black one that could cover its entire body.