Chaya Sar - Moros/Myrddin/Merlin

Moros/Myrddin/Merlin

Played by Matthew Walker, Moros, also known as Myrddin or Merlin, was the High Councilor of Atlantis during the days of the first siege of the city, and one of the most influential Ancients in the series. Although most of his backstory is revealed through story reconstruction, Myrddin appears several times before SG-1 finally meet him in person. Myrddin is introduced in the Atlantis episode "Before I Sleep", where an alternate Elizabeth Weir meets him as Moros when he was still living on Atlantis. A visual record of him still remains in the Atlantis database. Myrddin also appears as a Merlin hologram to SG-1, giving them information about his background and his motivations. Moros is named after Moros from Greek legend, the personification of impending doom and destruction, while his name Merlin refers to the Arthurian legend. Matthew Walker was nominated for a Leo Award in 2007 for "Best Supporting Performance by a Male in a Dramatic Series" for this role.

After the Wraith threat forced the Ancient inhabitants to return to Earth, Myrddin chose to seclude himself in meditation and learned to ascend. When he became convinced that the ascended Ori had become a threat to the humans in the Milky Way and even the Ancients, he chose to become human again while retaining most of the knowledge and powers he had gained through his ascension. Myrddin entrusted his secrets to a small number of noblemen on Earth, among them King Arthur. During this time, Myrddin also carved a tablet with an Ancient cipher leading to Avalon, which set the events of seasons 9 and 10 of SG-1 in motion. The weapon Myrddin sought to construct to defeat the Ori became known as the Sangraal, Blood Stone or Holy Grail. However, the Ancients did not support his research to design weapons that could eventually be used against them, and sent the ascended Ancient Morgan le Fay to watch him. Myrddin therefore constructed a dimension-shifting device known as Arthur's Mantle to conceal his work from them. In this device he hid the address of a planet where he supposedly hid the weapon, Camelot, and left more clues about the location of the Sangraal.

On their search for the Sangraal, SG-1 finally find Myrddin in stasis in "The Quest" and awaken him. Myrddin attempts to build the Sangraal, but his body has deteriorated too much during the 1,000 years of stasis that he transfers his consciousness into a modified Repository of Knowledge for Daniel Jackson to use to complete the task. Myrddin dies shortly after reconfiguring the device, but his consciousness remains in Daniel Jackson. Merlin and Jackson hatch a plot to complete the Sangraal. Shortly after Jackson deploys the Sangraal to the Ori home galaxy through a Supergate, the pre-programmed restoration Merlin encoded into Jackson's DNA activated, restoring Jackson to a state before he looked into the repository, destroying Merlin's consciousness.