While reading Silver Surfer's meeting with the mysterious Omega Council in Defenders #11 (Vol. 4), I immediately thought of the deceased hero called Omega.
Only after the cancellation of the 10-issue series Omega the Unknown did the hero learn his origin. Omega and youthful "sidekick" James-Michael Starling were in fact biological constructs sent to Earth by metallic lifeforms on another planet that faced extinction. Omega and Starling both died in Defenders #76-77 (Vol. 1). The metallic extraterrestrials designed additional constructs to send to other worlds as well. My initial suspicions aside, however, these beings do not appear to have ties to the recently revealed Omega Council.
Well-known for his use of monikers, Hulk repeatedly referred to the hero Omega as "Curly-Hair" during a guest appearance in Omega the Unknown #2 (May 1976), a story referenced in Defenders #39.
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