Most of my dreams have supernatural or spiritual qualities to them, or are at least highly abstract in some way. This often makes it difficult to describe them, and whenever I can, they're still packed with various levels of metaphor that I have a lot of trouble unraveling.
I had a dream once that I died and became a ghost that could wander around through large groups of people without being perceived in any way, shape, or form. I felt intense joy and happiness at that, which is pretty fucked up. That dream came out of my social anxiety that I've dealt with my whole life.
But then later in the dream my vision split up into four panels and I witnessed four "realms" at the same "time" but all normal meanings of time and space were lost. There's no words in any language I know to describe what it was really like, so that approximation will have to do.
I saw a vague but distinctly dressed man in that dream that I saw in another experience in which I was ripped out of my dream by an external force and attacked by a nonphysical entity before regaining normal conscious awareness. At the moment my consciousness was captured and redirected, I saw him again. I don't know who or what it is, except that I knew it wasn't a human and all I was seeing was a flat symbol. Similar to seeing a flat map of a country as opposed to seeing the country itself in 3D.