|This character exists primarily or exclusively within the Pre-Super Genesis Wave continuity.|
Information in this article may not be canonical to the storyline of the games or any other Sonic continuity.
- For the version of this character after the Super Genesis Wave, see E-106 Eta.
E-106 Eta was created sometime between 3236 and 3237, possibly during or after Dr. Eggman's campaign on harnessing the power of Chaos. Apparently, it went to West Robotropolis, only for it to be found by E-102 Gamma. Eta was then destroyed by Gamma.