|E-105 Zeta MkII|
E-105R Zeta Kai
|Political Alignment and Abilities|
Eight advanced missile launchers
Jon St. John
E-105 Zeta emerges as a much larger, advanced defense unit robot, while being also a mobile robot, with the help of boosters and seven rocket turrets around his perimeter
Battle with the Underground
When Robotnik sent the E-Series into battle Zeta took some time, but Manic knocked his primary circuits out, by throwing his drum stick into his bottom.
Last ditch battle
Robotnik used the entire E-Series to kill the Underground, but the planned didn't work and Zeta was part of the members of the team who did survive the EMP, and was placed back in storage.
He was revived in the Sonic Adventure adaptation and killed later before getting upgraded.