Lady Jolder was one of the first Iron Lords, led by Lord Radegast.¹ As a part of the Iron Lords, she took part in numerous battles, including challenging the Warlord Rience to single combat.²

She was likely a Striker Titan, as she taught Lord Felwinter how to shoulder charge.³⁴ She may have had a relationship with Lord Saladin.⁵⁶

She was one of the nine Lords of Iron who made it to the heart of the Replication Complex.⁷ She sealed herself and her companions inside to contain SIVA; however, she also trapped Saladin outside of the chamber so that he survived.⁶ She then attempted to destroy the replicator through an explosion, killing everyone inside.⁸

Jolder’s attempt to destroy the replicator was unsuccessful. A Remnant of Jolder, which was created by SIVA, remained within the Iron Tomb and was defeated by the Guardian.⁸