good npc addons

Friendly, I'd say Insurgency NPC's or any compatible with the gore mods. For Unfriendly, Banned/cut HL2 NPC's, Combine and headcrabs that actually jump on heads and infect, different virus mods, The scary/supernatural ones are really good and there's honestly too many to list, from ghosts to haunted dolls and statues, all types of stuff.