Silver Sonic

Silver Sonic[1] (メカソニック Mekasonikku?, lit. "Mecha Sonic"), also referred to as Bionic Sonic in certain western materials, is the robotic version of Sonic the Hedgehog that appeared Sonic the Hedgehog 2 for the Master System and Game Gear. It is the boss of the Scrambled Egg Zone.

This verison of sonic apperaded in

Sonic & Tails Game Gear/ Master System

This is the hardest boss in Sonic and Tails for the GAME GEAR/ MASTER SYSTEM.

If you dont get  the 7 emeralds or

you win without any

tails... dies....