"He and Saber both referred to a Helm of Hades, which cast the area in a pall of darkness. The reference is obvious." She pauses. "Perhaps not to Caster. Hades is the Greek god of the underworld," she explains briefly, before continuing. "The ability suggests Assassin, and it matches aspects of his legend well enough, I suppose. He seemed far too composed to be Berserker, and Archer is a wretched match for Perseus."