Getting started with scripted avatar NPCs provides an overview of getting started with scripted NPCs.

Created Scripted Avatar NPC provides steps on creating a scripted NPC for your world.

API Overview provides an overview of the APIs available for scripted avatars like locomotion and spawning and despawning.

Getting started with NPC assets provides an overview of NPC types and groups.

NPC scripts provide example scripts to use for animating your NPCs and giving them functionallity to interact with players in your world.

Setting up NPCs with navigation is a walkthrough of the NPC Sample world. This walkthrough provides information on adding NPCs to your world, attaching scripts, playing animations and configuring and enabling locomotion navigation.

Navigation mesh generation provides navigation meshes for defining walkable areas of an environment. Horizon includes World Builder tools and APIs that use navigation meshes to determine the areas of your world that NPCs can access, and the paths they can use to get there. With World Builder tools, you can set up, create, and update your meshes. You can then use the NavMesh TypeScript APIs to create scripts that retrieve navigation path calculations for your NPCs.

Nav mesh agents allows you to create agents that autonomously navigate through a world avoiding obstacles, guided by navigation meshes. Agents can be simple, like a primitive object or complex, like a premade NPC asset.