Seraphita Krast was a Knight Seneschal of House Krast, a scion whose zealous devotion to the Emperor made her among the most feared loyalist champions the Knightly houses fielded in the Heresy. Raised in the crusading traditions of her Mars-bound house, Seraphita saw the extermination of the traitor and the alien not as duty but as holy charge, and she rode to war with a fervour that bordered on the fanatical. Her Knight was maintained with the full rites of the Machine Cult, and she communed with its Throne Mechanicum as a supplicant with a sacred relic, drawing strength from the ancestral echoes of the zealots who had piloted it before her.
When the Heresy tore Mars apart and divided the houses, Seraphita never entertained a moment's doubt, and she led the scions of Krast against the traitor houses and Legions with a pitiless resolve. She fought at Beta-Garmon and across the war's great battlefields, her Knight standing beside loyalist Titans in the thickest of the fighting, and she earned a grim renown as a hunter of the faithless. To the traitors she was a relentless and unyielding foe, the Zealous Blade who neither bargained nor relented, a champion whose devotion made her as terrible in the Emperor's service as any warrior of the loyalist cause.