As far as I can tell UE4ASP_HeroTPP_Anim_Blueprint is trying to cast its Pawn’s Owner to Character and later Ue4ASP_Character, which our PatrollingGuard does not inherit from.
I tried reparenting PatrollingGuard to Ue4ASP_Character, but Steve still moves around in the T-pose. C’mon Steve, work with me.
I’m going to get the solution from the video, but hopefully this is a hint useful to someone else.