The question didn't ask for specifics. Just yes or no. I admit the question about the differences between species and humans could have been worded clearer. Perhaps differences between your species and the humans of this world would have been clearer.
No, but I know that Katniss Everdeen is here, and she was involved in a revolution in her world. Bilbo Baggins needs no explanation. The Star Wars folks. They're all tied to the main saga in some way.