Board Thread:Fun and Games/@comment-26242092-20170930141305/@comment-26242092-20180721210715

To answer your question, using your imagination counts as fiction so you don't need any fictional source material such as a book and can create your own charaters to mimic in your head. When you use mimicry you mimic that specific character at the time period you wanted them to be at so mimicing superman would give you all of superman's powers with others things you wanted such as his clothes, memories, items, and visual appearance.