Can you explain in more detail about what I need to do or could you suggest a place where I can learn from the very beginning? What I basically wanted to do is spawn an NPC in my current location, talk to him and then make him attack me. I wouldn't mind if the NPC looked like Mandalore or Atton or anyone else for that matter.
EDIT: What is the OnSpawn section? I made the .utc file of the NPC I want thanks to the first link on your reply. And there is no spells.2da file in my Override folder. What should I do?
Why did you replace
object ONPC = GetObjectByTag("dgon");
object ONPC = OBJECT_SELF;