Garry's Mod

Garry's Mod

[vj] Hivemind NPC's
How does each NPC work? What am I suppose to spawn in?
There are a few that are self-explanatory, like the leaper or brute. but a lot of the entities here are confusing. Has anyone figured out what all the entities do, and what would work best if I wanted to use them in a PvE or NPC Battles?