He is an organizational genius with a great organization of demons, EPH 6:10‑12.
The king of Tyre was one the few individuals in human history who was possessed by Satan just like the serpent in the garden and Judas Iscariot who betrayed our Lord.
Their bodies are not visible to the human race for the obvious reason of the danger of worshipping angels, as COL 2:18 warns us against.
He has the greatest mind that any creature has ever had....only one mind is more intelligent than his which is made available to creatures and that is "the mind of Christ", 1CO 2:16, PHI 2:5.
REV 12:9 "And the great dragon was thrown down, the serpent of old who is called the devil and Satan, who deceives the whole world; he was thrown down to the earth, and his angels were thrown down with him."
REV 13:14, he deceives those who dwell on the earth because of the signs which it was given him to perform
REV 18:23, he deceives the world by using a very popular church in Rome.
REV 19:20, he deceives those who had received the mark of the beast.
REV 20:3and threw him into the abyss, and shut it and sealed it over him, so that he should not deceive the nations any longer, until the thousand years were completed; after these things he must be released for a short time.
First, there is the thought of arrogance. Then there is the decision of arrogance. Then there is the action of arrogance.