I'm a vivid dreamer, and I've been a cyborg a few times, a vampire, a telekinetic a few times, a wolf a few times, a sea serpent, a fox, and a wizard of some kind.
Mostly though, I'm a soldier who fights killer robots and mutant sub-humans, or I explore haunted houses or death trap terrain like collapsing dams or flooding underpasses. My most common dream is what I call the "endless stairway dream", it's a big building that could be a university or a shopping mall or military barracks or apartments or even a prison. I have to explore it, and I've gotten really good at getting as far as I can. Going down or in, I've found, brings you to a sort of control room or into secret chambers.
I have a name for my dream world - "BackWorld", because that is what some furry little animal kids called it one time when I found their lair.
Because my dreams are so full of ruins and combat, I sometimes believe I can find the center of my faceless enemies - their command post - and wipe it out. After all these years, that's still a goal of mine.