In this episode, I will add a NPC (non player character) to our game. This character will be inherited from the same Ch_Human character blueprint we used to create the player character. I will add this character a simple AI behavior so that character will select a random point in the reachable radius in navigable area and walk. The AI blueprint will be extended from detourAIController. Also, the NPC characters will either walk, run or crouch randomly.