Yes, I believe angels exist, the fallen ones are among us and soon will have greater liberty for their judgment by the Church. They will cause havoc in the world. I do not believe that men will turn into angels. The 144,000 and the Great Multitude will become spirit beings of a higher order than angels. The Seraphs are spirit beings but the cherubim are not. There is an order among spirit beings of rank and authority. There is much more of the unseen Universe than of visible things.
Steam Psalm 50:5