The Billhook is a humanoid Nidean Altar designed by the Blessed Armory of the Divine Consecration.
When in motion, the Billhook could be confused for a conceptual sculpture due to the special material from which it is made: when filled with a charge from the Kalmeria Particle ability it can change, at the atomic level, from "elusive, clothlike silk" to "dangerously sharp stained glass." The former mode can wield textile restraints at a range of up to 100 yards, and the latter can unleash a whirlwind of melee violence.[1]
The BIllhook has five upper-body limbs, two on the left and three on the right, although the central right limb "always crosses its body to cover its 'heart,' behind which the cockpit rests."[2]
The Swordbearers of Crusade, Ramondre and Ignadiah, both pilot tier 4 Billhooks.[1]