these things are spooky
not the first time you run into them in the mod, you do run into one in the sewers that is cleaning up by burning bodies (human and zombie alike)
you get to keep his weapon afterwards too which is sick
mod is Raising The Bar: Redux, available on moddb:
https://www.moddb.com/mods/half-life-...
it's still a work in progress, but a great game already!