Yes. When I first started dreaming of cartoon characters and video game characters that Raven introduced me to, I thought they were her DC's or thoughtforms, manifestations of her own imagination. I had dreams of meeting The Tick, Arthur, and Batman on my own. Then, Vegeta began attacking me incessantly in dream after dream until I admitted he is a real sentient being.

This blew my mind. I think maybe it's because in a multiverse of infinite parallel universes, everything is true.