Heiron is a male Genii.
He was part of the contingent, led by Toran, that was hired by Mardola to kill Lt. Colonel John Sheppard and Dr. Rodney McKay, as well as her youngest sister Harmony, who would become queen. He was assigned to guard the Ruins of Larris. He was shot with a Wraith stunner by Sheppard. (SGA: "Harmony")