E-123 Omega is a robotic character from the Sonic the Hedgehog franchise, created by Dr. Eggman but now a vengeful enemy of the doctor and a member of Team Dark, alongside Shadow the Hedgehog and Rouge the Bat. He is an "Omega" model, an advanced Super Badnik from the E-100 Series, designed for combat with immense destructive power, including machine guns and a flamethrower. Driven by a deep grudge against Eggman for his abandonment and a desire to destroy him and his creations, Omega works with his teammates against any threats to their mission and each other.