Wow!
I wonder if the liquid man may have been one of your shadows--you know, a shadow part of your personality or psyche that you don't reveal to others. You do grab him at one point, so perhaps this is a side you may need. For example, if you have a temper, you may have kept it under wraps for a long time. However, you may need to re-introduce this shadowy side just a little. It may be telling you that you need some assertiveness in a particular situation.
As for the crackling and crashing sounds, I've experienced this phenomonon too. I've heard loud crashes and even gun shots, only to wake up and have there be nothing. Fascinating!