This unnamed Sonic robot, known as Mecha Sonic among fans, appears in Sonic Adventure and Sonic Adventure DX: Director's Cut. It is one of the many robotic duplicates of Sonic the Hedgehog created by Dr. Eggman. Unlike many of Eggman's robot duplicates though, this unit was never seen deployed. It was unnamed in its game appearance, although it later appeared in the Archie Comics series and was given the name "Silver Sonic II".