Thalan

Sole survivor of a long-extinct civilization who were almost entirely wiped out by Phoebus's people. He fought against Phoebus until they were the last two fighters to the extent that he was able to learn her strengths and weaknesses.

Thalan survived in a stasis pod in the Kohal system long into old age, and was retrieved by Colonel John Sheppard's Puddle Jumper and taken back to Atlantis. His consciousness, stored in the headrest of the pod, downloaded itself into a willing Sheppard -- who believed that that would allow Thalan to say goodbye to his wife Phoebus -- in the body of Dr. Elizabeth Weir.

Thalan played along with Phoebus's lie until the first opportunity arose to arm himself and fire on his "wife," his blood enemy. He pursued her in Atlantis in an attempt to annihilate her for the final vindication of his race. When Sheppard/Thalan was stunned by Teyla Emmagan, Weir/Phoebus ordered that Teyla kill him, lest she pump Haylon gas into Atlantis's living quarters. But before Teyla was forced to decide Dr. Rodney McKay overrode Weir/Phoebus's controls, cutting her out of the system.

When Phoebus had Teyla and Sheppard/Thalan cornered, Teyla armed him with a Wraith stunner pistol -- knowing he would have shot Weir either way.

The last remnants of Thalan soon vanished from Sheppard's conscious mind.