E-123 "Omega" is a character that appears in the Sonic the Hedgehog comic series and its spin-offs published by Archie Comics. He is a Badnik built by Dr. Eggman as part of his E-100 Series, who rebelled against the doctor and joined Team Dark to get revenge on his creator. He and his teammates-Shadow the Hedgehog and Rouge the Bat-work against his former creator in their efforts to protect his world as agents of the Guardian Units of the Nation.