The wife of Datak Tarr, one of the most powerful men in Defiance, Stahma is seemingly the perfect picture of a Castithan wife. Beneath the surface, however, lies a dark side that is ready to break from the traditional roles assigned her by her race. Stahma has her own ambitions and uses cunning and politics to achieve them.
Having met Datak during her voyage on an Ark, Stahma aided him in his business during the Pale Wars. When the fighting ended, the two found themselves among a group of migrant settlers and eventually settled in Defiance.