Phantom

Phantoms are creatures mentioned in the Sonic the Hedgehog comic series published by IDW Publishing. They are distinct replicas of existing beings that were utilized by the Eggman Emipre during its war with the Resistance.

Past
During the war between the Eggman Emipre and the Resistance, the former used phantoms of Metal Sonic as substitutions for the real thing while he was being upgraded into Neo Metal Sonic. Sonic the Hedgehog eventually wound up fighting one of these phantoms, but emerged victorious.

Trivia

 * The phantoms are based on the replicas that appeared in Sonic Forces.