God says in John 16:11. ...the prince of this world now stands condemned.
Angels are not like people. They are a different kind of creation. Their purpose is to minister in God's kingdom and on the earth.
Satan served the Trinity until he decided he wanted to be like them. Then he became a fallen angel.
As a result Jude 1:6 says, ...and the angels who did not keep their positions of authority but abanded their own home, these He has kept in darkness, bound with everlasting chains for judgement on the Great Day.
It also says in 2 Peter 2:4 that God did not spare angels when they sinned, but sent them to hell.
Satan does not have the capacity to believe in the Lord as Savior. He knows who Christ is, but will never repent because he cannot. He has been condemned to the abyss. I wouldn't call him a puppet, I would call him a loser.