Scorpius
Location:	Nineteen Pillars of Ascension, Milky Way Galaxy Bastion Space, Milky Way Galaxy Flarunium Realm, Milky Way Galaxy Council Space, Milky Way Galaxy Dominion Space, Milky Way Galaxy C Quadrant, Milky Way Galaxy
System(s):	Hector Hecuba Priam Andromache Parid
Relay(s):	Hector Relay
Population:	18.2 billion
Species:	Hanar Asari Turian Salarian Elcor Volus
Affiliation:	Most Illuminated Primacy of Kahje
Tier:	Tier VII
Capital:	Belan

Scorpius is a cluster located deep within former Council space, in what is now called the C Quadrant. Previously uninhabited, despite practically sitting on the Citadel's doorstep, the hanar discovered the cluster in 190 CE, where they focused most of their colonization efforts on the Hector system, which had the greatest number of profitability for the Hanar Primacy: it was also the site of first contact between the hanar and the Citadel Council.

Since first contact, the Scorpius cluster has remained a crucial part of the Primacy, primarily because of the traffic coming in and out of the Hector system. It also makes it the most culturally diverse cluster in the Primacy due to its proximity to the Citadel, with a smattering of asari, turian and salarian populations throughout its systems, as well as elcor and volus. This proximity was exploited by the Reapers during the Reaper War, who used the Hector relay to attack and capture the Citadel. Following the war, the Scorpius cluster returned to hanar control, and would remain as such even during the reign of the Galactic Dominion, and remains as such to this day, well into the Pax Aeterna Era.

The cluster is named for the Latin word Scorpius, which means "scorpion".