Though based on E-102 Gamma's design, the E-1000 series is noticeably streamlined and simplified, likely to allow mass-production. Its limbs feature only half the joints used in the original model, and its design lacks a targeting scope, waist-mounted flashlight, cannon-grip and ankle-mounted wheels, implying it lacks the original version's ability to change modes. The E-1000 as such resembles E-101, 103, and 104 more than E-102, lacking a targeting scope and using dual guns.
Sonic Adventure 2
In Sonic Adventure 2, E-1000 robots are featured as guarding at Pyramid Cave, Egg Quarters and Death Chamber. They are seen relatively stationary armed with dual missile launchers patterned after E-102's weapon. However, despite having double the firepower, the E-1000 line's weaponry, with low-velocity projectiles and no homing feature, is generally far less effective than E-102 Gamma's single missile launcher. They obviously lack the intelligence, agility, durability and skill of the original E-102.
There are also another version of the E-1000, which are cable to hover with a Jet Booster, instead of staying on the ground. When the player destroys both versions of E-1000 robots, the player is awarded with 200 points and the small animal friend inside the robot is free and collectible.
Sonic Rivals 2
E-1000 makes brief cameo appearance in Sonic Rivals 2 as Collectible Card No. 80. It is unlockable by achieving the high score in Haunted Haunt's boss fight against Egg Phantom. In the card, they are shown to have "1000" written on their side.
The E-1000 also make an appearance in the Sonic the Hedgehog comic series and its spin-off comic series published by Archie Comics. In this media, they are mass-produced Badniks and a part of Dr. Eggman's Badnik Horde. They first appeared in Sonic Universe #2, where one E-1000 is seen shooting a laser at Sonic inside a hidden pyramid base in as a part of a flashback. The robots, in more recent comics, appear to be more like the E100 series than their Sonic Adventure 2 counterparts, possessing the same amount of limb joints as standard E100 units.