In the Sonic the Hedgehog series, Doctor Eggman (or Dr. Robotnik in the early western version) has created many robots. The designation E-series gained prominence after the release of the video game Sonic Adventure, superseding the term "badnik" which had been used to describe Eggman's animal-style robots previously in most continuities. Presumably, the "E" stands for "Eggman", though this is not known for certain.
The first use of the term E-models was in Sonic Adventure. Although most often connected with the E-100 Series of gunner robots that were prominent in that game (see below), other minor robots were also considered E-models. They are listed here.
Unlike many of Eggman's robots, in Sonic Adventure or previous games, the E-100 series were important characters in their own right. They were gunner robots, still in the developmental stages. The most prominent was E-102 Gamma, who was a playable character during the game.
Main E-100 Series robots from Sonic Adventure include:
Further E-series robots appeared in the game Sonic Adventure 2. Notably, the E-1000 was an upgrade of E-102 Gamma, though in this game it served as a normal badnik-style enemy and has two cannon arms instead of one machine gun arm and one normal arm.
Several robots, supposedly from the E-Series, appeared in the television series Sonic X. However, since Sonic X occurs in a slightly different continuity from the games, they cannot necessarily be considered canon. They are as follows:
|Sonic the Hedgehog (game series) characters|
|Heroes||Sonic (Super, Hyper, Darkspine, the Werehog, Excalibur) | Tails (Super) | Knuckles (Super, Hyper) | Amy Rose | Cream | Blaze (Burning) | G.U.N. Commander | Emerl | Silver (Super) | Marine | Shade | Lumina Flowlight | Chip | Shahra | Knights of the Round Table | Caliburn | Yacker | Sticks|
|Anti-heroes/ Neutrals||Shadow (Super) | Rouge | Espio | Charmy | Vector | Mighty | Ray | E-102 Gamma | Chaos (Perfect) | E-123 Omega | Bean | Bark | Jet | Wave |Storm | Merlina | Illumina|
|Villains||Dr. Eggman | Metal Sonic | Mecha Sonic (Super) | Metal Knuckles | Tails Doll | E-Series | Fang | Gemerl | Eggman Nega | Battle Kukku Army | Biolizard | Black Doom | Ix (Super) | Void | Iblis | Mephiles | Solaris | Dark Gaia | Witchcart | Erazor | King Arthur | Orbot | Cubot | Lyric|
|Teams||Sonic/Heroes | Rose | Dark | Chaotix | Babylon|
|Other||Gerald & Maria Robotnik | Big | Chao | Tikal | E-101 Beta | Heavy and Bomb | Flicky | Animals|