- For the version of this character before the Super Genesis Wave, see E-104 Epsilon (Pre-Super Genesis Wave).
E-104 Epsilon is a character who appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It is the fifth unit in the E-100 Series robotic group created by Dr. Ivo "Eggman" Robotnik. E-104 Epsilon was one of the first E-100 Series robots created, specifically during the time of when Eggman harnessed the power of Chaos.
Although hardly anything is known about E-104 Epsilon in the Post-Super Genesis Wave timeline, it is assumed that Epsilon 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.