These hooded guys are Vah Shir. Or rather... have been Vah Shir before they became... hooded guys. Didn't exppect that. I just got the Vah Shir banestrike after killing 100 of these. Moonkitty
Just to confirm there is 2 rooms with 4 of these each in them near the dawnshroud ZL, they seem to drop the robust shadow essences there about 50% of the time or are for us.
These are light to dark blue to lvl 70. They are rootable, snareable, non-summoning. Some are non-casters, others could heal themselves (although not often), Plague, Ignite Blood, Paralyzing Earth, Insideous Retrogression. Max hit was 156. Dropped Stratolite, diamonds, emerald ring and Part of Yaeth's Compendium Pg. 91 (right side)in the hour or so I was there.