- For the version of this character in the Pre-Super Genesis Wave timeline, see E-107 Theta.
E-107 Theta is a character mentioned in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. It was the eighth unit in the E-100 Series robotic line created by Dr. Ivo "Eggman" Robotnik in the Light Mobius timeline.
E-107 Theta was allegedly stated to be one of the most "dangerous threats on Mobius" by Sally Acorn. Because of this, it was quarantined inside the catacombs of Castle Acorn along with the Anarchy Beryl Bomb, Tikhaos, and Shadow the Hedgehog. What exactly made E-107 Theta a malicious threat to the planet is unknown.