Soa, also referred to as The Infernal One, was a remarkably powerful Force-sensitive male Rakata. Prior to the Galactic War, he had been confined within the Eternity Vault located on Belsavis for approximately two millennia. His [prison](/article/prison/legends] section was uncovered during an Imperial military bombing run.
Soa, a physically imposing Rakata male, achieved prominence as a warlord within the Infinite Empire of his species long before its decline. Legends later recounted that Soa, leading a force that included his creations, the Annihilation Droid XRR-3 and the alchemical monstrosity Gharj, subjugated a thousand planets during his reign, earning him the moniker "Infernal One." Among these conquered worlds was Korriban, where he governed the native Sith. Following the King Adas's rebellion against the Rakata, Soa and his Infernal Council of treacherous Sith, along with their army, were imprisoned within the Eternity Vault on Belsavis. Legend states that it required a combined force of Rakata and other ancient species to subdue him.
Many years later, the renewed conflict between the resurgent Sith Empire and the Galactic Republic during the Galactic War inadvertently resulted in Soa's reawakening. Both factions, partially aware of what they had stirred, dispatched a strike team with the goal of eliminating Soa before he could amass enough power to threaten the entire galaxy. The success of either team is uncertain. The strike team battled Soa's creations and allies, eventually reaching his confinement chamber. Upon their arrival, he finally broke free and engaged them in combat, mocking them and asserting his invincibility. However, the strike team proved him wrong, ultimately ending the Infernal One's existence after 20 millennia.
Soa possessed an ego as immense as his physical size and power. He was arrogant and openly boasted about his past achievements, displaying extreme pride. When confronted by the strike team sent to stop him, he dismissed the possibility of defeat, choosing instead to insult and demean his adversaries.
Soa was a proficient user of the Force. He employed a range of combat techniques to defend himself and attack his opponents. These techniques included Ball Lightning, trapping opponents in Mind Traps, and extensive telekinetic abilities that allowed him to hurl opponents through the air and destabilize large platforms. He could also create a powerful Force barrier that could only be broken by dropping heavy pillars onto him.
He also seems to have been talented in alchemy, claiming to have created an army of slaves and the monster Gharj. Additionally he was a skilled manipulator of Rakatan Force-based technologies, having developed the Annihilation Droid XRR-3.
Soa is featured in the BioWare MMORPG Star Wars: The Old Republic, as the main target within the Eternity Vault Operation. His voice is provided by Fred Tatasciore.