Metal Sonic is a robotic version of Sonic the Hedgehog built by Dr. Eggman.
In Juniper Lee's Adventures Series, Metal Sonic is rebuilt by a team of video game villains who wish to use his destructive powers to conquer the world. Unfortunately for him, he is stopped by the Te Xuan Ze Adventure Crew and dismantled once and for all.
- Metal Sonic becomes Juniper Lee's enemy in the eighth episode of the Juniper Lee's Adventures Series titled Super Smash Sister. He is the main antagonist of the episode.