Can The Dream Version Of You Have A Different Personality

As the title asks, is it possible that, in a dream, your personality and behaviour is different than in waking life? (I'm not necessarily talking about in LDs, I haven't had them) I haven't had an LD yet, but from the dreams I recall, my personality doesn't seem too different. But in a recent nightmare I had, my personality was quite different than normal, because the "dream me" was both a dumbass and a pussy xD Link to the thread I made: https://www.reddit.com/r/LucidDreaming/comments/595ff0/just_a_bit_of_nightmare_stories/