Sometimes it's amazingly easy to incubate any kind of dream you want. After I had read about dreaming about being somebody else I immediately had a dream in which I was all the dream characters at the same time. That is to say: all the dream characters were independent characters, but I could feel their emotions, their convictions, their thoughts, everything.
The next day I read that you could have multiple dreams at the same time. Which turned out to be true the next night, but I never succeeded in catching this experience into words.