Answer: It is quite possible he existed because every spiritual quality must be manifested in matter. Almost everything written in the Torah happened in our world.
Question: Did Bilam deliberately plunge into egoism?
Answer: The fact is that all the villains of the world performed their specific tasks.
Question: Did he go for it consciously, i.e., split the head of the serpent, attract evil forces from the serpent, and so on?
Answer: No. He existed in our world, but he did not know his vices just as the Pharaoh did not know he was representing the entire egoism of the world. He fulfilled his function because he was a pharaoh while believing this is normal correct behavior.
When the Creator said to Moses, “Come unto Pharaoh for I have hardened his heart,” Pharaoh did not feel that his heart was hardened; he was just doing his work. He did not even need to know about it because all the negative characters were not connected to the Creator; they are opposite to Him. Therefore, they lack awareness of their mission, which they perform purely automatically.
From KabTV’s “The Power of The Book of Zohar” #16