Svarog was one of the seven key System Lords attending the Hassara summit. His forces invaded Latona and attacked the planet from orbit after the death of the Caretaker rendered the Sentinel device inoperative and the planet defenseless. When the Sentinel was repaired, Svarog and his forces were destroyed, and vanished.
Voice of Svarog: Peter DeLuise*
*Cameo by Peter DeLuise: Director, Writer, Producer
Cross Reference: Goa'uld, Hassara System, Latona, Marul, Sentinel, System Lords
Episode Reference: Summit, Last Stand, The Sentinel