Sirius Thel Eden was born on Invictus, a small colony that usually harbored criminals from the Terminus System, in 2142 CE to two turian merchants. His family was wealthy, and when Sirius reached 15 years of age he joined the military. His unit fought criminals, assassins, even thwarting the assassination of a Primarch. Later in life, he was put under apprenticeship to an asari Spectre known simply as Jilan Lyra. The asari helped craft the modern day Spectres through years of combat, espionage, investigations, and general military missions. Sirius gained Spectre status around the age of 40.
- Mass Effect Origins (First appearance)