Yeah, I haven't completely fleshed out the building system, but walls / fences was an idea on my initial paper. The bandit NPC (shady guy in black) tries to run away from you, and the guard (yellow) will try to defend for you -- at early levels he's very strong, but (eventually will) fall off over time. The blue is meant to not have a purpose and be the "generic" villager that can later specialize, and the green is a merchant -- though the trading menu is incomplete.