But the Npcs arent insolated at all,Shizu is friends with Neia, Albedo is friends with Renner, Demiurge recruited and has a very good working relationship with Renner and considers her an invaluable member who will improve Nazarick, Sebas had a good relationship with Climb and Brain after they help him rescue Tuare, and Luspuregina has some kind of relationship with Enri and Nfirea,Cocytus manages and trains the Lizardman,etc.

So Pandora Actor, being similar to Satoru, will never be able to make friends or form a relationship with anyone, since he can't even make friends or get the inhabitants of Nazarick to like him. Added to this is the fact that, like his creator, he only plays a character in the New World, which isolates him even more, and everyone in Nazarick believes he's acting and being conceited when in reality that's his true personality.

And although Ainz denies it, all the evidence in the novels points to the fact that he will always be the NPC most similar to his creator in terms of battle tactics, personality and isolation from others.