E-105 Zeta (Archie)

"Found retrofitted into restorative engine in Egg Carrier remains. STATUS: Liberated."

- E-102 Gamma's Data Log, From The Databanks of E-102 Gamma

E-105 Zeta is a character who appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is the sixth unit in the E-100 Series line, created by Dr. Ivo "Eggman" Robotnik. They exist in both the Pre- and Post-Super Genesis Wave timelines.

Pre-Super Genesis Wave
E-105 Zeta was created sometime during or after the events of Dr. Eggman's campaign to harness the power of Chaos. However, Zeta was stationed inside the Egg Carrier as part of the fortress' engine. However, as part of E-102 Gamma's mission to eliminate all of the E-100 Series, Zeta was destroyed by Gamma.

Post-Super Genesis Wave
Although hardly anything is known about E-105 Zeta in the Post-Super Genesis Wave timeline, it is assumed that Zeta did indeed exist within the timeline and was eventually destroyed by E-102 Gamma, if the events of Sonic Adventure remain true to the timeline.

Trivia

 * E-105 Zeta originally did not appear during the Sonic Adventure adaption in the Pre-Super Genesis Wave timeline. To somewhat make up for this mistake, the E-105 Series were created as a replacement to Zeta's absence.
 * However, Ian Flynn later clarified that Zeta did indeed exist in the Pre-Super Genesis Wave, according to From The Databanks of E-102 Gamma.
 * Zeta being a part of the restorative engine in the Egg Carrier is a reference to the video game counterpart of Zeta, who originally was a regular E-100 Series robot until it underwent a remodel as an engine on the Egg Carrier.