SIVA

"We thought we were indestructible, the Lords of Iron. We swore we would do anything to protect the Last City. Some of us paid the ultimate price. I am all that remains. We thought we had sealed away the plague for eternity, but now it has returned, and this time with a Fallen army. It is time to avenge my fallen brothers and sisters. Stand with me, Guardian. Prove yourself worthy, and the Iron Lords will rise again!"

- Saladin Forge

The SIVA plague was once a Golden Age breakthrough in self-assembling, self-replicating nanotechnology. It was discovered by the Iron Lords during the early city age, and in an attempt to utilize the technology for humanity's betterment, SIVA turned against them. Unable to destroy the techno-virus, the Iron Lords sealed it beneath the earth. But a year after the Taken War, the Fallen House of Devils, while looting tombs from the Golden Age, had managed to unearth SIVA. As their Splicers tried to harness the technology, the Devils became mutated. Unable to defeat the mutant Devils on his own, Saladin began seeking out Guardians to help him form a new generation of the Iron Lords to end the threat of SIVA once and for all.