forgot to disclose a neat set of low-poly animal skills that I sourced from @sketchfab here https://sketchfab.com/3d-models/lowpoly-animal-skulls-1-2938b8237531482d9750ce2717fbe099 -- ran them through Houdini and into UE4 to use as pseudo-random masks for the mannequins -- check out his other models here: https://sketchfab.com/norgeotloic ((Thanks Loic!!))