Kieran

Kieran was a Kelownan scientist, and head of the naqahdria project to turn the mineral into a powerful destructive weapon. He was also a mentor to Jonas Quinn.

When the Kelownans learned of the military alliance between the Terranians and the Andari Federation, Kieran travelled to Earth with Ambassador Drelock and Commander Hale in the hopes of obtaining the Tau'ri's more advanced military technology to aid in their conflict with Kelowna's two rival nations.

After initial negotiations with Earth for help in defusing the crisis, Kieran privately confessed to his old student, Jonas Quinn, that he feared the destructive power of his naqahdria bomb and realized that a permanent peace between the three nations of his world was the only chance to avert disaster. Kieran proposed to introduce SG-1 to the Kelownan resistance, a secret group bent on taking control of the Kelownan government and forcing the other nations back to the negotiating table. The team reluctantly agreed.

However, when Dr. Kieran fell from a building on Langara and was returned to Earth for medical treatment, it was discovered that his mind had deteriorated due to his exposure to the naqahdria. Also, it appeared that the entire Kelownan resistance was a fabrication within his mind. Kieran was subsequently placed in intensive care at the SGC. It is unknown if Kieran was eventually returned to his planet or not.