The E-105 Series was a robot design based off the early E-100 Series droids created by Dr. Eggman. Armed with a single arm cannon, this particular model was used only once, during Dr. Eggman's invasion of Feral Forest. Although the bots managed to discover Elias Acorn along with his wife and unborn child, the entire army was defeated when the villagers of Feral Forest rallied behind Sonic the Hedgehog and Sally Acorn, Geoffrey St. John and Hershey Cat and attacked them. (StH: #121)
- E-105 Zeta did not make an appearance in the comics at all, and his role was fulfilled by E-101 Beta. The E-105 designation was thus given to the E-105 series robots.