Calderoc is a technosentient rapier like incisor created by the Coda Sisterhood of Assassins on the homeplanet of Khera. Possessed of a 7th mineral consciousness capable of neruopsychic tactical programming similar to Midnighter. It was presented as a sort of welcome home gift to the lost majestrix of the Sisterhood by the Kheran nobility.
The blade was in actuality a hidden bomb meant to act as a tool of assassination by the corrupt sect of Coda in order to claim the life of both Zannah and a Lord Emp of the High Lord ruling council alongside her. The sword admitting to this truth just as the titanthrope Glingo took the bomb onto herself in order to prevent a catastrophe.