E-01

What is supposedly the first robot in the E-Series is the gargantuan central core computer of the Death Chamber in Sonic Adventure 2. It is a very large, immobile, four-wheeled cylindrical unit the height of the central area it is positioned inside. Its "E-01" decal can be found near the top of its metallic outer shell. While some say it is an E-Series prototype, it seems more like a nuclear reactor, and not much like a fighting machine. One thing can be taken from all this, however: Eggman made his pyramid base earlier than anyone would have guessed.