e-123 omega

A character in the Sonic the Hedgehog series. The last known member of the E-100 Series of robots created by Dr. Eggman. A bulky red and black robot with the omega (Ω) symbol on his shoulder.

Omega first appeared in Sonic Heroes. He was deployed inside a secret laboratory with the purpose of guarding a capsule that contained Shadow the Hedgehog.
Omega serves as the Power type character in Team Dark since Rouge the Bat convinced him to form a team with her and a then-amnesiac Shadow to search after Eggman. He is known to hold a long-standing hatred for his creator and his other robots.