E-123 Omega

E-123 Omega, or, technically, E-123 Ω, is a robot created by Dr. Eggman and is out to destroy him due to lack of respect and want for revenge. He bears a strong resemblance to another one of Eggman's robots, E-102 Gamma (a possible design inspiration), who is part of the same robotics production line. He has the capital Omega symbol (Ω) painted on the front of his left shoulder, in contrast to all the other E-100s, which had the lowercase Greek letter (ω), possibly representing that he is the most powerful of Eggman's E-Series.

Quest for revenge
(StH:#20* SU: #*)

Personality
Like many other Eggman robots, Omega has a free will and a personality. He thinks other Eggman robots are inferior to him and that he is the most powerful and even refers to himself as the "ultimate E-Series robot." It also seems that Omega lacks any sort of negativity towards Sonic and his friends. Omega is also very prideful and feels embarrassed after he is defeated by less powerful Eggman robots.

Omega's only goals in life are to take revenge on Eggman for disabling him, and destroy the doctor's other robots to prove himself superior. Omega is also fairly loyal and dependable when you're on his good side, a bit of a holdover from his original purpose as a servant.

Abilities
Omega has a huge array of extremely destructive weapons concealed in his arms, (somewhat similar to that of Grounder), including two rapid-fire machine guns, two flamethrowers, two missile launchers, two powerful energy cannons and likely many more weapons. Omega can also utilize jet boosters built in his back to help accelerate and hover, making him somewhat fast. His walking speed isn't very impressive, though.

He has also displayed considerable physical strength, capable of destroying thick doors and giant blocks of stone with his metal fists. He also has some kind of built in sensor that allows him to locate enemies and other various objects.

Romance
Fat chance! (FFF dialogue #1)