Mecha Sonic (Death Egg Zone)

Mecha Sonic (often called 'Silver Sonic' after its Archie counterpart and to differentiate from the Sonic & Knuckles robot of the same name) is the first boss of the Death Egg Zone in Sonic the Hedgehog 2 (originally) for the Sega Mega Drive. It is a robot modelled after Sonic the Hedgehog.

History
A more well-known silver-like robot was featured in the 16-bit version of Sonic 2, which was released later than the 8-bit game. In this appearance, he is the first line of defense aboard the Death Egg, and the first boss of the Death Egg Zone. He has a sturdier form, is extremely bulky and may have been remote controlled by Doctor Robotnik, but is more combat-capable and would be able to shred Sonic with its saw-blade spikes. In order to defeat him, Sonic must strike him eight times while avoiding his spikes (not easy considering there are no rings in this zone unless playing an alternate difficulty in Sonic Jam).

Abilities
Mecha Sonic could speed across the room, spin-jump, and shoot small spikes in mid-spin jump.

In other media
Version of the Death Egg Mecha Sonic have appeared in various other media, including Archie Comics and Sonic the Comic.

Archie Comics
In the Archie Comics continuity, versions of the Death Egg Zone Mecha Sonic are called Silver Sonic, after the English manual for Sonic the Hedgehog 2 for the Master System. The first Silver Sonic appeared in the miniseries Sonic Quest, a loose adaptation of Sonic the Hedgehog 2 and Sonic 3 & Knuckles. This version of Silver Sonic was much larger and slower than the version in the games, standing about ten times the size of Sonic the Hedgehog.

Sonic defeated Silver Sonic by short-circuiting its brain circuits. He then controlled the robot from its head, using it to fight Robotnik in his Eggs-O-Skeleton armor.

Sonic the Comic
In Sonic the Comic, Sonic and Tails return to the Death Egg some time after the events of Sonic the Hedgehog 2 to find that Mecha Sonic is still functional (barely). Sonic defeats it for good by kicking off its head. The robot was unnamed in this continuity.

Naming
This robot was not named in the English-language manuals accompanying Sonic the Hedgehog 2, but in the Japanese manuals he was called "Mecha Sonic" (as were all early Sonic robots, including Metal Sonic).

Because of his similarity to Silver Sonic from the Master System version of Sonic the Hedgehog 2, Archie Comics used the name "Silver Sonic" for the version of the character in the Sonic Quest miniseries. Many fans adopted this name for the games character, particularly to differentiate it from the radically different design of Mecha Sonic seen in Sonic & Knuckles.

However, he was given an official English-language name, "Mecha Sonic", in the backstory for Sonic the Hedgehog 4: Episode I, released on the US version of the official website, in the Story section.

Trivia

 * A glitch may occur in Sonic the Hedgehog 2 (Mega Drive/Genesis) in which its defeat will glitch into a floating frozen flame, making the player stuck until time runs out.