The emperor is read as supreme authority and control over a wide domain. Dream books see the figure as ambition, power or a father figure larger than life.
When this appeared in your dream, what were you feeling?
My Cosmic Code has a private dream journal. Write a dream down and the app picks out the symbols in it, shows what dream books say about them and, over time, which words recur across your entries. The journal is stored on your device only.