Right from Genesis we can see that lying spirits have no form. It was the lying spirit in the beginning that used the form of a creature to lure away mankind to do the will of the counterfeiter.
It would be his goal I believe to convince men he does has form. it would be much easier to sneak around and confuse the things of God as those of men A good example would be found in Mathew 16 showing us how the antichrist as a lying spirit works to seduce men into believe we do need and out representative in order to believe the Spirit of Truth as if God was a man as us.
Remember the Catholics use peter to represent the key that the gates of hell could never prevail against turning things upside down with his lying legion of spirits.
Then Peter took him, and began to rebuke him, saying, Be it far from thee, Lord: this shall not be unto thee.
But he turned, and said unto Peter, Get thee behind me, Satan: thou art an offence unto me: for thou savourest not the "things that be of God", but "those that be of men".Mat 16:22
Angels are administering spirits .They are not made of the dust of the field as beast of the field as mankind.. They have no DNA therefore are not able to reproduce.
The angels that left there first place of habitation are not subject to the gospel key . Rather than administering spirits to the saints as sons of God they are proved as lying spirits again as that which does not have flesh and blood . This is as though we did wrestle against flesh and blood to begin with.
Ephesians 6:12 For we wrestle not against flesh and blood, but against principalities, against powers, against the rulers of the darkness of this world, against spiritual wickedness in high places.
When looking at the signified language in the book of Revelation as parable. Again you cannot see lying spirits as angels. It is signified he saw them and the key signifies the gospel the truth of God . The bottom pit speaks of the never changing power of the gospel , it like a chain bind lying spirits from deceiving the sons of God as those who follow after the Spirit. The gospel works two ways .To one it binds them not releasing from the lie and to the other it open the gates of hell and sets us free. His Truth sets us free.
Rev 20:1 And I saw an angel come down from heaven, having the key of the bottomless pit and a great chain in his hand.
God can use literal chains in parables to make a hidden point as he does in all parable. But literal chains could never resist the will of God when dealing with lying spirits.
Below he uses chains to help aid us in understanding the unity of lying spirits. When asked its name, singular, he replied Legion to show us when one appears you get the whole 9 yards of lies . . A fact that is useful in looking into other occurrences as the foundation of necromancy dealing with workers with familial spirit that men seek after in idol worship.,
When he saw Jesus, he cried out, and fell down before him, and with a loud voice said, What have I to do with thee, Jesus, thou Son of God most high? I beseech thee, torment me not. (For he had commanded the unclean spirit to come out of the man. For oftentimes it had caught him: and he was kept bound with chains and in fetters; and he brake the bands, and was driven of the devil into the wilderness.And Jesus asked him, saying, What is thy name? And he said, Legion: because many devils were entered into him.And they besought him that he would not command them to go out into the deep.And there was there an herd of many swine feeding on the mountain: and they besought him that he would suffer them to enter into them. And he suffered them.Then went the devils out of the man, and entered into the swine: and the herd ran violently down a steep place into the lake, and were choked. Luk 8:28
The gospel does all the loosening and binding.