From Destinypedia, the Destiny wiki
House of Dusk
Experiment Site Guard
The Up and Up
Wire Rifle (common) Shock Rifle (common)
High Durability Rapid Movement Guard Experiment Site Summon Fallen Fallen Melee
Rearguard Commanders are Major Vandals that appear exclusively in the The Up and Up Adventure, where the simulated Vandal lieutenants defend their superior, simulated Cache Defender.