While Eridium increases a Siren's powers and makes them more powerful, even increasing their natural healing to the point of superhuman regeneration, the 'high' of the power boost has the potential to be addictive. Neither the Eridians nor their weapons are present in Borderlands 2, although there are a few Relics of Eridian origin.ĭue to the mysterious relationship of Sirens to Eridians, Sirens can absorb Eridium as a means to enhance their powers. The ore has some semblance of usage as a universal power source, as the Eridian Weapons from Borderlands use Eridium chunks as a reusable and rechargeable ammunition source.
Eridium is appropriately named after the ancient precursor race that utilized it, the Eridians.