Metal Sonic Mark III, Metal Sonic Wiki

Metal Sonic Mark III was an upgrade of Metal Sonic which would have appeared in Sonic X-Treme. It changed Metal (or Mecha) Sonic's appearance to be taller and red and also gave him two spear/pile-bunker-like arms. It only has one spine, and also has shoulder & knee pads.

Metal Sonic Mark III, Metal Sonic Wiki

Metal Sonic, Sonic Wiki Zone

Metal Sonic (Classic), Villains Wiki

User blog:DarkClaw3/PE Proposal: Turbo Mecha Sonic

Let's appreciate the fact Neo Metal Sonic exists in 3 different

Shard the Metal Sonic, Wiki

Metal Sonic, Sonic Wiki Zone

Neo Metal Sonic (Archie), Sonic Wiki Zone

Neo Metal Sonic, Sonic Wiki Zone