Michael was the first Archangel, and the Creator asked for “his” input as more were made. He requested that the Archangels have the ability to appear physically when the occasion called for it as a way for people to better relate to and recognize them. He has explained that they appear to people the way they imagine them to be. I imagine them to have wings, no halos, tall, but not huge, etc. , so if and when I see them, that’s how they’ll look.
A lot of people have reported seeing Angels, but I don’t recall any being scared, although maybe some have. I was never afraid of them, even the first time I channeled them, but I think that has to do with their energy more than their appearance or voices. They are a very loving presence, and that comes across very clearly and in a very comforting way. There’s never any need to fear Angels. I’m sure it would be shocking for one to just appear out of nowhere, but I doubt it would happen that way, and if it did, I’m sure you’d find out quickly that they were there to help, not harm. They know how best to reach us. Does that make sense?