Erebus leads the Cylon task force known as Cylon Fleet Gamma against the Twelve Colonies during the beginning of the Cylon War, and was especially interested in Lt. William Adama, whom it was believed would one day lead the Colonials (and thus, the Cylons) to the lost tribe of Colonists.
Little is known about the being that called itself Erebus beyond speculation and ill-remembered myths. A dark, devious and hate-filled individual, Erebus was driven by a desire to wipe out all humans, a species he saw as inferior. Not a native of the Cylon Alliance, he apparently only served the Cylons only because it furthered his own ends. Some observers believed that Erebus was an incredibly long-lived being, possibly one of the mythic Lords of Kobol who were the progenitors of the Colonial peoples. Ancient records from the Tombs of Kobol speak of Erebus being exiled from his race for terrible crimes, and of his metahuman abilities that allow him to predict future events and project telekinetic force with his mind. Although it cannot be confirmed, it was suspected that Erebus commanded the Cylon forces that attacked Sagitara early in the war; it was during this assault that William Adama’s father was killed and Bryn Magus was captured and imprisoned. Whatever the truth about this aberrant, corrupt being, Lord Erebus proved himself to be a clear and present danger to all humans. Erebus was served by modified Cylons as part of his Crimson Elite Guard. He was finally killed by Adama in the upper atmosphere of the gas giant planet Golem Five (2003 Video Game).
- This character is part of a separate continuity that mixes elements from the Re-imagined Series and Original Series as well as unique material. It is not a canonical item in either series.
- Unlike its Original Series counterparts, Erebus has an actual name as opposed to being called only by its title. Because of this and other significant differences found in the video game, the canonical value of Erebus as an Original Series character is very unlikely.
- Erebus was voiced by veteran actor Dwight Schultz, who starred in The A-Team television series with Original Series actor Dirk Benedict.