From Destinypedia, the Destiny wiki
Species:
Hive
Type:
Vanquisher
Sect:
Grasp of Nokris
Gender:
Male
Purpose:
Elite Guardsman
Mission:
Escalation Protocol
Weapon(s):
Cleaver Hive Shield
Abilities:
High Durability Rapid Movement Guard Sword
Severing Knights are a Major variant of the Vanquisher found exclusively in the Escalation Protocol World Event. When killed, they drop an Ascendant Sword Relic similar to Swordbearers.[1]